diff options
Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_sdma.c')
| -rw-r--r-- | drivers/infiniband/hw/ipath/ipath_sdma.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_sdma.c b/drivers/infiniband/hw/ipath/ipath_sdma.c index 284c9bca517..17a517766ad 100644 --- a/drivers/infiniband/hw/ipath/ipath_sdma.c +++ b/drivers/infiniband/hw/ipath/ipath_sdma.c @@ -31,6 +31,7 @@ */ #include <linux/spinlock.h> +#include <linux/gfp.h> #include "ipath_kernel.h" #include "ipath_verbs.h" @@ -246,7 +247,7 @@ static void sdma_abort_task(unsigned long opaque) /* ipath_sdma_abort() is done, waiting for interrupt */ if (status == IPATH_SDMA_ABORT_DISARMED) { - if (jiffies < dd->ipath_sdma_abort_intr_timeout) + if (time_before(jiffies, dd->ipath_sdma_abort_intr_timeout)) goto resched_noprint; /* give up, intr got lost somewhere */ ipath_dbg("give up waiting for SDMADISABLED intr\n"); @@ -340,7 +341,7 @@ resched: * JAG - this is bad to just have default be a loop without * state change */ - if (jiffies > dd->ipath_sdma_abort_jiffies) { + if (time_after(jiffies, dd->ipath_sdma_abort_jiffies)) { ipath_dbg("looping with status 0x%08lx\n", dd->ipath_sdma_status); dd->ipath_sdma_abort_jiffies = jiffies + 5 * HZ; @@ -698,10 +699,8 @@ retry: addr = dma_map_single(&dd->pcidev->dev, tx->txreq.map_addr, tx->map_len, DMA_TO_DEVICE); - if (dma_mapping_error(&dd->pcidev->dev, addr)) { - ret = -EIO; - goto unlock; - } + if (dma_mapping_error(&dd->pcidev->dev, addr)) + goto ioerr; dwoffset = tx->map_len >> 2; make_sdma_desc(dd, sdmadesc, (u64) addr, dwoffset, 0); @@ -741,6 +740,8 @@ retry: dw = (len + 3) >> 2; addr = dma_map_single(&dd->pcidev->dev, sge->vaddr, dw << 2, DMA_TO_DEVICE); + if (dma_mapping_error(&dd->pcidev->dev, addr)) + goto unmap; make_sdma_desc(dd, sdmadesc, (u64) addr, dw, dwoffset); /* SDmaUseLargeBuf has to be set in every descriptor */ if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_USELARGEBUF) @@ -781,10 +782,10 @@ retry: descqp = &dd->ipath_sdma_descq[dd->ipath_sdma_descq_cnt].qw[0]; descqp -= 2; /* SDmaLastDesc */ - descqp[0] |= __constant_cpu_to_le64(1ULL << 11); + descqp[0] |= cpu_to_le64(1ULL << 11); if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_INTREQ) { /* SDmaIntReq */ - descqp[0] |= __constant_cpu_to_le64(1ULL << 15); + descqp[0] |= cpu_to_le64(1ULL << 15); } /* Commit writes to memory and advance the tail on the chip */ @@ -798,7 +799,18 @@ retry: list_add_tail(&tx->txreq.list, &dd->ipath_sdma_activelist); if (tx->txreq.flags & IPATH_SDMA_TXREQ_F_VL15) vl15_watchdog_enq(dd); - + goto unlock; + +unmap: + while (tail != dd->ipath_sdma_descq_tail) { + if (!tail) + tail = dd->ipath_sdma_descq_cnt - 1; + else + tail--; + unmap_desc(dd, tail); + } +ioerr: + ret = -EIO; unlock: spin_unlock_irqrestore(&dd->ipath_sdma_lock, flags); fail: |