diff options
Diffstat (limited to 'drivers/mmc')
42 files changed, 923 insertions, 711 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 85f0e8cd875..cb9fbc83b09 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -23,6 +23,7 @@ #include <linux/kernel.h> #include <linux/fs.h> +#include <linux/slab.h> #include <linux/errno.h> #include <linux/hdreg.h> #include <linux/kdev_t.h> @@ -85,7 +86,14 @@ static void mmc_blk_put(struct mmc_blk_data *md) mutex_lock(&open_lock); md->usage--; if (md->usage == 0) { + int devmaj = MAJOR(disk_devt(md->disk)); int devidx = MINOR(disk_devt(md->disk)) >> MMC_SHIFT; + + if (!devmaj) + devidx = md->disk->first_minor >> MMC_SHIFT; + + blk_cleanup_queue(md->queue.queue); + __clear_bit(devidx, dev_use); put_disk(md->disk); @@ -613,6 +621,7 @@ static int mmc_blk_probe(struct mmc_card *card) return 0; out: + mmc_cleanup_queue(&md->queue); mmc_blk_put(md); return err; diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c index b9f1e84897c..445d7db2277 100644 --- a/drivers/mmc/card/mmc_test.c +++ b/drivers/mmc/card/mmc_test.c @@ -13,6 +13,7 @@ #include <linux/mmc/card.h> #include <linux/mmc/host.h> #include <linux/mmc/mmc.h> +#include <linux/slab.h> #include <linux/scatterlist.h> @@ -74,6 +75,9 @@ static void mmc_test_prepare_mrq(struct mmc_test_card *test, } mrq->cmd->arg = dev_addr; + if (!mmc_card_blockaddr(test->card)) + mrq->cmd->arg <<= 9; + mrq->cmd->flags = MMC_RSP_R1 | MMC_CMD_ADTC; if (blocks == 1) @@ -190,7 +194,7 @@ static int __mmc_test_prepare(struct mmc_test_card *test, int write) } for (i = 0;i < BUFFER_SIZE / 512;i++) { - ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1); + ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1); if (ret) return ret; } @@ -219,7 +223,7 @@ static int mmc_test_cleanup(struct mmc_test_card *test) memset(test->buffer, 0, 512); for (i = 0;i < BUFFER_SIZE / 512;i++) { - ret = mmc_test_buffer_transfer(test, test->buffer, i * 512, 512, 1); + ret = mmc_test_buffer_transfer(test, test->buffer, i, 512, 1); if (ret) return ret; } @@ -426,7 +430,7 @@ static int mmc_test_transfer(struct mmc_test_card *test, for (i = 0;i < sectors;i++) { ret = mmc_test_buffer_transfer(test, test->buffer + i * 512, - dev_addr + i * 512, 512, 0); + dev_addr + i, 512, 0); if (ret) return ret; } diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 49e582356c6..d6ded247d94 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -9,6 +9,7 @@ * published by the Free Software Foundation. * */ +#include <linux/slab.h> #include <linux/module.h> #include <linux/blkdev.h> #include <linux/freezer.h> @@ -90,9 +91,10 @@ static void mmc_request(struct request_queue *q) struct request *req; if (!mq) { - printk(KERN_ERR "MMC: killing requests for dead queue\n"); - while ((req = blk_fetch_request(q)) != NULL) + while ((req = blk_fetch_request(q)) != NULL) { + req->cmd_flags |= REQ_QUIET; __blk_end_request_all(req, -EIO); + } return; } @@ -153,9 +155,8 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock if (mq->bounce_buf) { blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_ANY); - blk_queue_max_sectors(mq->queue, bouncesz / 512); - blk_queue_max_phys_segments(mq->queue, bouncesz / 512); - blk_queue_max_hw_segments(mq->queue, bouncesz / 512); + blk_queue_max_hw_sectors(mq->queue, bouncesz / 512); + blk_queue_max_segments(mq->queue, bouncesz / 512); blk_queue_max_segment_size(mq->queue, bouncesz); mq->sg = kmalloc(sizeof(struct scatterlist), @@ -179,10 +180,9 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock if (!mq->bounce_buf) { blk_queue_bounce_limit(mq->queue, limit); - blk_queue_max_sectors(mq->queue, + blk_queue_max_hw_sectors(mq->queue, min(host->max_blk_count, host->max_req_size / 512)); - blk_queue_max_phys_segments(mq->queue, host->max_phys_segs); - blk_queue_max_hw_segments(mq->queue, host->max_hw_segs); + blk_queue_max_segments(mq->queue, host->max_hw_segs); blk_queue_max_segment_size(mq->queue, host->max_seg_size); mq->sg = kmalloc(sizeof(struct scatterlist) * @@ -223,17 +223,18 @@ void mmc_cleanup_queue(struct mmc_queue *mq) struct request_queue *q = mq->queue; unsigned long flags; - /* Mark that we should start throwing out stragglers */ - spin_lock_irqsave(q->queue_lock, flags); - q->queuedata = NULL; - spin_unlock_irqrestore(q->queue_lock, flags); - /* Make sure the queue isn't suspended, as that will deadlock */ mmc_queue_resume(mq); /* Then terminate our worker thread */ kthread_stop(mq->thread); + /* Empty the queue */ + spin_lock_irqsave(q->queue_lock, flags); + q->queuedata = NULL; + blk_start_queue(q); + spin_unlock_irqrestore(q->queue_lock, flags); + if (mq->bounce_sg) kfree(mq->bounce_sg); mq->bounce_sg = NULL; @@ -245,8 +246,6 @@ void mmc_cleanup_queue(struct mmc_queue *mq) kfree(mq->bounce_buf); mq->bounce_buf = NULL; - blk_cleanup_queue(mq->queue); - mq->card = NULL; } EXPORT_SYMBOL(mmc_cleanup_queue); diff --git a/drivers/mmc/card/sdio_uart.c b/drivers/mmc/card/sdio_uart.c index f53755533e7..a0716967b7c 100644 --- a/drivers/mmc/card/sdio_uart.c +++ b/drivers/mmc/card/sdio_uart.c @@ -34,9 +34,10 @@ #include <linux/seq_file.h> #include <linux/serial_reg.h> #include <linux/circ_buf.h> -#include <linux/gfp.h> #include <linux/tty.h> #include <linux/tty_flip.h> +#include <linux/kfifo.h> +#include <linux/slab.h> #include <linux/mmc/core.h> #include <linux/mmc/card.h> @@ -47,19 +48,9 @@ #define UART_NR 8 /* Number of UARTs this driver can handle */ -#define UART_XMIT_SIZE PAGE_SIZE +#define FIFO_SIZE PAGE_SIZE #define WAKEUP_CHARS 256 -#define circ_empty(circ) ((circ)->head == (circ)->tail) -#define circ_clear(circ) ((circ)->head = (circ)->tail = 0) - -#define circ_chars_pending(circ) \ - (CIRC_CNT((circ)->head, (circ)->tail, UART_XMIT_SIZE)) - -#define circ_chars_free(circ) \ - (CIRC_SPACE((circ)->head, (circ)->tail, UART_XMIT_SIZE)) - - struct uart_icount { __u32 cts; __u32 dsr; @@ -82,7 +73,7 @@ struct sdio_uart_port { struct mutex func_lock; struct task_struct *in_sdio_uart_irq; unsigned int regs_offset; - struct circ_buf xmit; + struct kfifo xmit_fifo; spinlock_t write_lock; struct uart_icount icount; unsigned int uartclk; @@ -105,6 +96,8 @@ static int sdio_uart_add_port(struct sdio_uart_port *port) kref_init(&port->kref); mutex_init(&port->func_lock); spin_lock_init(&port->write_lock); + if (kfifo_alloc(&port->xmit_fifo, FIFO_SIZE, GFP_KERNEL)) + return -ENOMEM; spin_lock(&sdio_uart_table_lock); for (index = 0; index < UART_NR; index++) { @@ -140,6 +133,7 @@ static void sdio_uart_port_destroy(struct kref *kref) { struct sdio_uart_port *port = container_of(kref, struct sdio_uart_port, kref); + kfifo_free(&port->xmit_fifo); kfree(port); } @@ -456,9 +450,11 @@ static void sdio_uart_receive_chars(struct sdio_uart_port *port, static void sdio_uart_transmit_chars(struct sdio_uart_port *port) { - struct circ_buf *xmit = &port->xmit; + struct kfifo *xmit = &port->xmit_fifo; int count; struct tty_struct *tty; + u8 iobuf[16]; + int len; if (port->x_char) { sdio_out(port, UART_TX, port->x_char); @@ -469,27 +465,25 @@ static void sdio_uart_transmit_chars(struct sdio_uart_port *port) tty = tty_port_tty_get(&port->port); - if (tty == NULL || circ_empty(xmit) || + if (tty == NULL || !kfifo_len(xmit) || tty->stopped || tty->hw_stopped) { sdio_uart_stop_tx(port); tty_kref_put(tty); return; } - count = 16; - do { - sdio_out(port, UART_TX, xmit->buf[xmit->tail]); - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); + len = kfifo_out_locked(xmit, iobuf, 16, &port->write_lock); + for (count = 0; count < len; count++) { + sdio_out(port, UART_TX, iobuf[count]); port->icount.tx++; - if (circ_empty(xmit)) - break; - } while (--count > 0); + } - if (circ_chars_pending(xmit) < WAKEUP_CHARS) + len = kfifo_len(xmit); + if (len < WAKEUP_CHARS) { tty_wakeup(tty); - - if (circ_empty(xmit)) - sdio_uart_stop_tx(port); + if (len == 0) + sdio_uart_stop_tx(port); + } tty_kref_put(tty); } @@ -581,7 +575,7 @@ static int uart_carrier_raised(struct tty_port *tport) struct sdio_uart_port *port = container_of(tport, struct sdio_uart_port, port); unsigned int ret = sdio_uart_claim_func(port); - if (ret) /* Missing hardware shoudn't block for carrier */ + if (ret) /* Missing hardware shouldn't block for carrier */ return 1; ret = sdio_uart_get_mctrl(port); sdio_uart_release_func(port); @@ -632,7 +626,6 @@ static int sdio_uart_activate(struct tty_port *tport, struct tty_struct *tty) { struct sdio_uart_port *port = container_of(tport, struct sdio_uart_port, port); - unsigned long page; int ret; /* @@ -641,22 +634,17 @@ static int sdio_uart_activate(struct tty_port *tport, struct tty_struct *tty) */ set_bit(TTY_IO_ERROR, &tty->flags); - /* Initialise and allocate the transmit buffer. */ - page = __get_free_page(GFP_KERNEL); - if (!page) - return -ENOMEM; - port->xmit.buf = (unsigned char *)page; - circ_clear(&port->xmit); + kfifo_reset(&port->xmit_fifo); ret = sdio_uart_claim_func(port); if (ret) - goto err1; + return ret; ret = sdio_enable_func(port->func); if (ret) - goto err2; + goto err1; ret = sdio_claim_irq(port->func, sdio_uart_irq); if (ret) - goto err3; + goto err2; /* * Clear the FIFO buffers and disable them. @@ -700,12 +688,10 @@ static int sdio_uart_activate(struct tty_port *tport, struct tty_struct *tty) sdio_uart_release_func(port); return 0; -err3: - sdio_disable_func(port->func); err2: - sdio_uart_release_func(port); + sdio_disable_func(port->func); err1: - free_page((unsigned long)port->xmit.buf); + sdio_uart_release_func(port); return ret; } @@ -727,7 +713,7 @@ static void sdio_uart_shutdown(struct tty_port *tport) ret = sdio_uart_claim_func(port); if (ret) - goto skip; + return; sdio_uart_stop_rx(port); @@ -749,10 +735,6 @@ static void sdio_uart_shutdown(struct tty_port *tport) sdio_disable_func(port->func); sdio_uart_release_func(port); - -skip: - /* Free the transmit buffer page. */ - free_page((unsigned long)port->xmit.buf); } /** @@ -822,27 +804,12 @@ static int sdio_uart_write(struct tty_struct *tty, const unsigned char *buf, int count) { struct sdio_uart_port *port = tty->driver_data; - struct circ_buf *circ = &port->xmit; - int c, ret = 0; + int ret; if (!port->func) return -ENODEV; - spin_lock(&port->write_lock); - while (1) { - c = CIRC_SPACE_TO_END(circ->head, circ->tail, UART_XMIT_SIZE); - if (count < c) - c = count; - if (c <= 0) - break; - memcpy(circ->buf + circ->head, buf, c); - circ->head = (circ->head + c) & (UART_XMIT_SIZE - 1); - buf += c; - count -= c; - ret += c; - } - spin_unlock(&port->write_lock); - + ret = kfifo_in_locked(&port->xmit_fifo, buf, count, &port->write_lock); if (!(port->ier & UART_IER_THRI)) { int err = sdio_uart_claim_func(port); if (!err) { @@ -859,13 +826,13 @@ static int sdio_uart_write(struct tty_struct *tty, const unsigned char *buf, static int sdio_uart_write_room(struct tty_struct *tty) { struct sdio_uart_port *port = tty->driver_data; - return port ? circ_chars_free(&port->xmit) : 0; + return FIFO_SIZE - kfifo_len(&port->xmit_fifo); } static int sdio_uart_chars_in_buffer(struct tty_struct *tty) { struct sdio_uart_port *port = tty->driver_data; - return port ? circ_chars_pending(&port->xmit) : 0; + return kfifo_len(&port->xmit_fifo); } static void sdio_uart_send_xchar(struct tty_struct *tty, char ch) diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index bdb165f9304..49d9dcaeca4 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -13,6 +13,7 @@ #include <linux/device.h> #include <linux/err.h> +#include <linux/slab.h> #include <linux/mmc/card.h> #include <linux/mmc/host.h> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 30acd526582..3168ebd616b 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1089,6 +1089,7 @@ void mmc_rescan(struct work_struct *work) mmc_claim_host(host); mmc_power_up(host); + sdio_reset(host); mmc_go_idle(host); mmc_send_if_cond(host, host->ocr_avail); @@ -1151,6 +1152,9 @@ void mmc_stop_host(struct mmc_host *host) cancel_delayed_work(&host->detect); mmc_flush_scheduled_work(); + /* clear pm flags now and let card drivers set them as needed */ + host->pm_flags = 0; + mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { if (host->bus_ops->remove) @@ -1273,12 +1277,13 @@ int mmc_suspend_host(struct mmc_host *host, pm_message_t state) mmc_claim_host(host); mmc_detach_bus(host); mmc_release_host(host); + host->pm_flags = 0; err = 0; } } mmc_bus_put(host); - if (!err) + if (!err && !(host->pm_flags & MMC_PM_KEEP_POWER)) mmc_power_off(host); return err; @@ -1296,8 +1301,10 @@ int mmc_resume_host(struct mmc_host *host) mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { - mmc_power_up(host); - mmc_select_voltage(host, host->ocr); + if (!(host->pm_flags & MMC_PM_KEEP_POWER)) { + mmc_power_up(host); + mmc_select_voltage(host, host->ocr); + } BUG_ON(!host->bus_ops->resume); err = host->bus_ops->resume(host); if (err) { diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index 96d10f40fb2..53cb380c098 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -10,6 +10,7 @@ #include <linux/debugfs.h> #include <linux/fs.h> #include <linux/seq_file.h> +#include <linux/slab.h> #include <linux/stat.h> #include <linux/mmc/card.h> diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index a268d12f1af..47353909e34 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -16,6 +16,7 @@ #include <linux/idr.h> #include <linux/pagemap.h> #include <linux/leds.h> +#include <linux/slab.h> #include <linux/mmc/host.h> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index c11189446a1..89f7a25b7ac 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -11,6 +11,7 @@ */ #include <linux/err.h> +#include <linux/slab.h> #include <linux/mmc/host.h> #include <linux/mmc/card.h> @@ -207,7 +208,7 @@ static int mmc_read_ext_csd(struct mmc_card *card) } card->ext_csd.rev = ext_csd[EXT_CSD_REV]; - if (card->ext_csd.rev > 3) { + if (card->ext_csd.rev > 5) { printk(KERN_ERR "%s: unrecognised EXT_CSD structure " "version %d\n", mmc_hostname(card->host), card->ext_csd.rev); @@ -225,7 +226,7 @@ static int mmc_read_ext_csd(struct mmc_card *card) mmc_card_set_blockaddr(card); } - switch (ext_csd[EXT_CSD_CARD_TYPE]) { + switch (ext_csd[EXT_CSD_CARD_TYPE] & EXT_CSD_CARD_TYPE_MASK) { case EXT_CSD_CARD_TYPE_52 | EXT_CSD_CARD_TYPE_26: card->ext_csd.hs_max_dtr = 52000000; break; @@ -237,7 +238,6 @@ static int mmc_read_ext_csd(struct mmc_card *card) printk(KERN_WARNING "%s: card is mmc v4 but doesn't " "support any high-speed modes.\n", mmc_hostname(card->host)); - goto out; } if (card->ext_csd.rev >= 3) { diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index d2cb5c63439..326447c9ede 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -9,6 +9,7 @@ * your option) any later version. */ +#include <linux/slab.h> #include <linux/types.h> #include <linux/scatterlist.h> diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c index fdd414eded0..5eac21df480 100644 --- a/drivers/mmc/core/sd.c +++ b/drivers/mmc/core/sd.c @@ -11,6 +11,7 @@ */ #include <linux/err.h> +#include <linux/slab.h> #include <linux/mmc/host.h> #include <linux/mmc/card.h> diff --git a/drivers/mmc/core/sdio.c b/drivers/mmc/core/sdio.c index 06b64085a35..2dd4cfe7ca1 100644 --- a/drivers/mmc/core/sdio.c +++ b/drivers/mmc/core/sdio.c @@ -188,6 +188,40 @@ static int sdio_disable_cd(struct mmc_card *card) } /* + * Devices that remain active during a system suspend are + * put back into 1-bit mode. + */ +static int sdio_disable_wide(struct mmc_card *card) +{ + int ret; + u8 ctrl; + + if (!(card->host->caps & MMC_CAP_4_BIT_DATA)) + return 0; + + if (card->cccr.low_speed && !card->cccr.wide_bus) + return 0; + + ret = mmc_io_rw_direct(card, 0, 0, SDIO_CCCR_IF, 0, &ctrl); + if (ret) + return ret; + + if (!(ctrl & SDIO_BUS_WIDTH_4BIT)) + return 0; + + ctrl &= ~SDIO_BUS_WIDTH_4BIT; + ctrl |= SDIO_BUS_ASYNC_INT; + + ret = mmc_io_rw_direct(card, 1, 0, SDIO_CCCR_IF, ctrl, NULL); + if (ret) + return ret; + + mmc_set_bus_width(card->host, MMC_BUS_WIDTH_1); + + return 0; +} + +/* * Test if the card supports high-speed mode and, if so, switch to it. */ static int sdio_enable_hs(struct mmc_card *card) @@ -224,7 +258,7 @@ static int sdio_enable_hs(struct mmc_card *card) * we're trying to reinitialise. */ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, - struct mmc_card *oldcard) + struct mmc_card *oldcard, int powered_resume) { struct mmc_card *card; int err; @@ -235,9 +269,11 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, /* * Inform the card of the voltage */ - err = mmc_send_io_op_cond(host, host->ocr, &ocr); - if (err) - goto err; + if (!powered_resume) { + err = mmc_send_io_op_cond(host, host->ocr, &ocr); + if (err) + goto err; + } /* * For SPI, enable CRC as appropriate. @@ -262,7 +298,7 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, /* * For native busses: set card RCA and quit open drain mode. */ - if (!mmc_host_is_spi(host)) { + if (!powered_resume && !mmc_host_is_spi(host)) { err = mmc_send_relative_addr(host, &card->rca); if (err) goto remove; @@ -273,7 +309,7 @@ static int mmc_sdio_init_card(struct mmc_host *host, u32 ocr, /* * Select card, as all following commands rely on that. */ - if (!mmc_host_is_spi(host)) { + if (!powered_resume && !mmc_host_is_spi(host)) { err = mmc_select_card(card); if (err) goto remove; @@ -425,6 +461,12 @@ static int mmc_sdio_suspend(struct mmc_host *host) } } + if (!err && host->pm_flags & MMC_PM_KEEP_POWER) { + mmc_claim_host(host); + sdio_disable_wide(host->card); + mmc_release_host(host); + } + return err; } @@ -437,7 +479,13 @@ static int mmc_sdio_resume(struct mmc_host *host) /* Basic card reinitialization. */ mmc_claim_host(host); - err = mmc_sdio_init_card(host, host->ocr, host->card); + err = mmc_sdio_init_card(host, host->ocr, host->card, + (host->pm_flags & MMC_PM_KEEP_POWER)); + if (!err) + /* We may have switched to 1-bit mode during suspend. */ + err = sdio_enable_wide(host->card); + if (!err && host->sdio_irqs) + mmc_signal_sdio_irq(host); mmc_release_host(host); /* @@ -507,7 +555,7 @@ int mmc_attach_sdio(struct mmc_host *host, u32 ocr) /* * Detect and init the card. */ - err = mmc_sdio_init_card(host, host->ocr, NULL); + err = mmc_sdio_init_card(host, host->ocr, NULL, 0); if (err) goto err; card = host->card; diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c index 9e060c87e64..4a890dcb95a 100644 --- a/drivers/mmc/core/sdio_bus.c +++ b/drivers/mmc/core/sdio_bus.c @@ -13,6 +13,7 @@ #include <linux/device.h> #include <linux/err.h> +#include <linux/slab.h> #include <linux/mmc/card.h> #include <linux/mmc/sdio_func.h> diff --git a/drivers/mmc/core/sdio_cis.c b/drivers/mmc/core/sdio_cis.c index 9538389783c..541bdb89e0c 100644 --- a/drivers/mmc/core/sdio_cis.c +++ b/drivers/mmc/core/sdio_cis.c @@ -14,6 +14,7 @@ */ #include <linux/kernel.h> +#include <linux/slab.h> #include <linux/mmc/host.h> #include <linux/mmc/card.h> diff --git a/drivers/mmc/core/sdio_io.c b/drivers/mmc/core/sdio_io.c index f9aa8a7deff..ff27c8c7135 100644 --- a/drivers/mmc/core/sdio_io.c +++ b/drivers/mmc/core/sdio_io.c @@ -189,7 +189,12 @@ static inline unsigned int sdio_max_byte_size(struct sdio_func *func) { unsigned mval = min(func->card->host->max_seg_size, func->card->host->max_blk_size); - mval = min(mval, func->max_blksize); + + if (mmc_blksz_for_byte_mode(func->card)) + mval = min(mval, func->cur_blksize); + else + mval = min(mval, func->max_blksize); + return min(mval, 512u); /* maximum size for byte mode */ } @@ -635,3 +640,52 @@ void sdio_f0_writeb(struct sdio_func *func, unsigned char b, unsigned int addr, *err_ret = ret; } EXPORT_SYMBOL_GPL(sdio_f0_writeb); + +/** + * sdio_get_host_pm_caps - get host power management capabilities + * @func: SDIO function attached to host + *< |