diff options
| -rw-r--r-- | drivers/scsi/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/scsi/ipr.c | 49 | ||||
| -rw-r--r-- | drivers/scsi/ipr.h | 2 |
3 files changed, 10 insertions, 42 deletions
diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig index 8a739b74cfb7..7e3f6e37fb66 100644 --- a/drivers/scsi/Kconfig +++ b/drivers/scsi/Kconfig @@ -1059,6 +1059,7 @@ config SCSI_IPR depends on PCI && SCSI && ATA select FW_LOADER select IRQ_POLL + select SGL_ALLOC ---help--- This driver supports the IBM Power Linux family RAID adapters. This includes IBM pSeries 5712, 5703, 5709, and 570A, as well diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index e07dd990e585..52735162444f 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -3816,10 +3816,8 @@ static struct device_attribute ipr_iopoll_weight_attr = { **/ static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) { - int sg_size, order, bsize_elem, num_elem, i, j; + int sg_size, order; struct ipr_sglist *sglist; - struct scatterlist *scatterlist; - struct page *page; /* Get the minimum size per scatter/gather element */ sg_size = buf_len / (IPR_MAX_SGLIST - 1); @@ -3827,45 +3825,18 @@ static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) /* Get the actual size per element */ order = get_order(sg_size); - /* Determine the actual number of bytes per element */ - bsize_elem = PAGE_SIZE * (1 << order); - - /* Determine the actual number of sg entries needed */ - if (buf_len % bsize_elem) - num_elem = (buf_len / bsize_elem) + 1; - else - num_elem = buf_len / bsize_elem; - /* Allocate a scatter/gather list for the DMA */ - sglist = kzalloc(sizeof(struct ipr_sglist) + - (sizeof(struct scatterlist) * (num_elem - 1)), - GFP_KERNEL); - + sglist = kzalloc(sizeof(struct ipr_sglist), GFP_KERNEL); if (sglist == NULL) { ipr_trace; return NULL; } - - scatterlist = sglist->scatterlist; - sg_init_table(scatterlist, num_elem); - sglist->order = order; - sglist->num_sg = num_elem; - - /* Allocate a bunch of sg elements */ - for (i = 0; i < num_elem; i++) { - page = alloc_pages(GFP_KERNEL, order); - if (!page) { - ipr_trace; - - /* Free up what we already allocated */ - for (j = i - 1; j >= 0; j--) - __free_pages(sg_page(&scatterlist[j]), order); - kfree(sglist); - return NULL; - } - - sg_set_page(&scatterlist[i], page, 0, 0); + sglist->scatterlist = sgl_alloc_order(buf_len, order, false, GFP_KERNEL, + &sglist->num_sg); + if (!sglist->scatterlist) { + kfree(sglist); + return NULL; } return sglist; @@ -3883,11 +3854,7 @@ static struct ipr_sglist *ipr_alloc_ucode_buffer(int buf_len) **/ static void ipr_free_ucode_buffer(struct ipr_sglist *sglist) { - int i; - - for (i = 0; i < sglist->num_sg; i++) - __free_pages(sg_page(&sglist->scatterlist[i]), sglist->order); - + sgl_free_order(sglist->scatterlist, sglist->order); kfree(sglist); } diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index c7f0e9e3cd7d..93570734cbfb 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -1454,7 +1454,7 @@ struct ipr_sglist { u32 num_sg; u32 num_dma_sg; u32 buffer_len; - struct scatterlist scatterlist[1]; + struct scatterlist *scatterlist; }; enum ipr_sdt_state { |