diff options
| author | Kalle Valo <kalle.valo@nokia.com> | 2009-06-12 14:14:41 +0300 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-07-10 14:57:42 -0400 |
| commit | 8d47cdb617e0e76e05ea0f92fc164e53bf874b30 (patch) | |
| tree | 822a46412cbe804cca151340ed7b5f240a9a663a /drivers/net/wireless/wl12xx/spi.c | |
| parent | c4f5c8521868789caaf704c9c2d523b40ccfcb02 (diff) | |
wl12xx: reserve buffer for partition command in struct wl12xx
This is now DMA safe.
Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/wl12xx/spi.c')
| -rw-r--r-- | drivers/net/wireless/wl12xx/spi.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/net/wireless/wl12xx/spi.c b/drivers/net/wireless/wl12xx/spi.c index abdf171a47e..fb7c52c4d9c 100644 --- a/drivers/net/wireless/wl12xx/spi.c +++ b/drivers/net/wireless/wl12xx/spi.c @@ -167,24 +167,26 @@ void wl12xx_spi_init(struct wl12xx *wl) * | | * */ -void wl12xx_set_partition(struct wl12xx *wl, +int wl12xx_set_partition(struct wl12xx *wl, u32 mem_start, u32 mem_size, u32 reg_start, u32 reg_size) { - u8 tx_buf[sizeof(u32) + 2 * sizeof(struct wl12xx_partition)]; struct wl12xx_partition *partition; struct spi_transfer t; struct spi_message m; + size_t len, cmd_len; u32 *cmd; - size_t len; int addr; + cmd_len = sizeof(u32) + 2 * sizeof(struct wl12xx_partition); + cmd = kzalloc(cmd_len, GFP_KERNEL); + if (!cmd) + return -ENOMEM; + spi_message_init(&m); memset(&t, 0, sizeof(t)); - memset(tx_buf, 0, sizeof(tx_buf)); - cmd = (u32 *) tx_buf; - partition = (struct wl12xx_partition *) (tx_buf + sizeof(u32)); + partition = (struct wl12xx_partition *) (cmd + 1); addr = HW_ACCESS_PART0_SIZE_ADDR; len = 2 * sizeof(struct wl12xx_partition); @@ -244,11 +246,15 @@ void wl12xx_set_partition(struct wl12xx *wl, wl->virtual_mem_addr = 0; wl->virtual_reg_addr = mem_size; - t.tx_buf = tx_buf; - t.len = sizeof(tx_buf); + t.tx_buf = cmd; + t.len = cmd_len; spi_message_add_tail(&t, &m); spi_sync(wl->spi, &m); + + kfree(cmd); + + return 0; } void wl12xx_spi_read(struct wl12xx *wl, int addr, void *buf, |