From 860cfe796c793bfad1e666de9600852f2d653c57 Mon Sep 17 00:00:00 2001 From: Guennadi Liakhovetski Date: Fri, 11 Mar 2011 08:30:14 +0100 Subject: [PATCH] mmc: tmio: fix address in kunmap_atomic() calls Currently kunmap_atomic() doesn't take into account the offset, used with kmap_atomic(). On platforms, where kunmap_atomic() is not a NOP, this will lead to problems, when offset != 0. Signed-off-by: Guennadi Liakhovetski Signed-off-by: Chris Ball --- drivers/mmc/host/tmio_mmc.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/mmc/host/tmio_mmc.c b/drivers/mmc/host/tmio_mmc.c index 0e4998fa6fc5..ac52eb65395e 100644 --- a/drivers/mmc/host/tmio_mmc.c +++ b/drivers/mmc/host/tmio_mmc.c @@ -219,9 +219,9 @@ static char *tmio_mmc_kmap_atomic(struct scatterlist *sg, unsigned long *flags) return kmap_atomic(sg_page(sg), KM_BIO_SRC_IRQ) + sg->offset; } -static void tmio_mmc_kunmap_atomic(void *virt, unsigned long *flags) +static void tmio_mmc_kunmap_atomic(struct scatterlist *sg, unsigned long *flags, void *virt) { - kunmap_atomic(virt, KM_BIO_SRC_IRQ); + kunmap_atomic(virt - sg->offset, KM_BIO_SRC_IRQ); local_irq_restore(*flags); } @@ -510,7 +510,7 @@ static void tmio_mmc_pio_irq(struct tmio_mmc_host *host) host->sg_off += count; - tmio_mmc_kunmap_atomic(sg_virt, &flags); + tmio_mmc_kunmap_atomic(host->sg_ptr, &flags, sg_virt); if (host->sg_off == host->sg_ptr->length) tmio_mmc_next_sg(host); @@ -770,7 +770,7 @@ static void tmio_check_bounce_buffer(struct tmio_mmc_host *host) unsigned long flags; void *sg_vaddr = tmio_mmc_kmap_atomic(host->sg_orig, &flags); memcpy(sg_vaddr, host->bounce_buf, host->bounce_sg.length); - tmio_mmc_kunmap_atomic(sg_vaddr, &flags); + tmio_mmc_kunmap_atomic(host->sg_orig, &flags, sg_vaddr); } } @@ -897,7 +897,7 @@ static void tmio_mmc_start_dma_tx(struct tmio_mmc_host *host) void *sg_vaddr = tmio_mmc_kmap_atomic(sg, &flags); sg_init_one(&host->bounce_sg, host->bounce_buf, sg->length); memcpy(host->bounce_buf, sg_vaddr, host->bounce_sg.length); - tmio_mmc_kunmap_atomic(sg_vaddr, &flags); + tmio_mmc_kunmap_atomic(sg, &flags, sg_vaddr); host->sg_ptr = &host->bounce_sg; sg = host->sg_ptr; } -- GitLab