From 355dfa1bc8026d185678fed4e409719a595b2d39 Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Tue, 22 May 2007 14:43:14 -0500 Subject: [PATCH] [SCSI] scsi_error: send the sense buffer down without copying Now that the block submission path correctly bounces, we can simply use the command sense_buffer to send to retrieve sense information and junk the unnecessary page allocation. Signed-off-by: James Bottomley --- drivers/scsi/scsi_error.c | 26 +++----------------------- 1 file changed, 3 insertions(+), 23 deletions(-) diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c index e8350c562d24..9adb64ac054c 100644 --- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -18,12 +18,12 @@ #include #include #include -#include #include #include #include #include #include +#include #include #include @@ -640,16 +640,8 @@ static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, unsigned char *cmnd, memcpy(scmd->cmnd, cmnd, cmnd_size); if (copy_sense) { - gfp_t gfp_mask = GFP_ATOMIC; - - if (shost->hostt->unchecked_isa_dma) - gfp_mask |= __GFP_DMA; - - sgl.page = alloc_page(gfp_mask); - if (!sgl.page) - return FAILED; - sgl.offset = 0; - sgl.length = 252; + sg_init_one(&sgl, scmd->sense_buffer, + sizeof(scmd->sense_buffer)); scmd->sc_data_direction = DMA_FROM_DEVICE; scmd->request_bufflen = sgl.length; @@ -719,18 +711,6 @@ static int scsi_send_eh_cmnd(struct scsi_cmnd *scmd, unsigned char *cmnd, } - /* - * Last chance to have valid sense data. - */ - if (copy_sense) { - if (!SCSI_SENSE_VALID(scmd)) { - memcpy(scmd->sense_buffer, page_address(sgl.page), - sizeof(scmd->sense_buffer)); - } - __free_page(sgl.page); - } - - /* * Restore original data */ -- 2.20.1