From f3e93f735321ea75108b41cb654c16f92d3f264c Mon Sep 17 00:00:00 2001 From: James Bottomley Date: Tue, 25 Apr 2006 16:48:30 -0500 Subject: [SCSI] Fix DVD burning issues. Some pioneer DVDs are apparently returning odd "not ready" status codes that the mid-layer doesn't recognise and so passes back to the user as errors. This patch overhauls our not-ready handling and adds transparent retries for: format in progress rebuild in progress recalculation in progress operation in progress Long write in progress self test in progress The Pioneer was actually returning "long write in progress" Signed-off-by: James Bottomley --- drivers/scsi/scsi_lib.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) (limited to 'drivers/scsi/scsi_lib.c') diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 7b0f9a3810d..764a8b375ea 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1067,16 +1067,29 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes, break; case NOT_READY: /* - * If the device is in the process of becoming ready, - * retry. + * If the device is in the process of becoming + * ready, or has a temporary blockage, retry. */ - if (sshdr.asc == 0x04 && sshdr.ascq == 0x01) { - scsi_requeue_command(q, cmd); - return; + if (sshdr.asc == 0x04) { + switch (sshdr.ascq) { + case 0x01: /* becoming ready */ + case 0x04: /* format in progress */ + case 0x05: /* rebuild in progress */ + case 0x06: /* recalculation in progress */ + case 0x07: /* operation in progress */ + case 0x08: /* Long write in progress */ + case 0x09: /* self test in progress */ + scsi_requeue_command(q, cmd); + return; + default: + break; + } } - if (!(req->flags & REQ_QUIET)) + if (!(req->flags & REQ_QUIET)) { scmd_printk(KERN_INFO, cmd, - "Device not ready.\n"); + "Device not ready: "); + scsi_print_sense_hdr("", &sshdr); + } scsi_end_request(cmd, 0, this_count, 1); return; case VOLUME_OVERFLOW: -- cgit v1.2.3 From f52359622fa25783cf1a08c0772048d2ed1a7434 Mon Sep 17 00:00:00 2001 From: Bryan Holty Date: Wed, 22 Mar 2006 06:35:39 -0600 Subject: [SCSI] scsi_lib.c: properly count the number of pages in scsi_req_map_sg() The calculation of nr_pages in scsi_req_map_sg() doesn't account for the fact that the first page could have an offset that pushes the end of the buffer onto a new page. Signed-off-by: Bryan Holty Signed-off-by: James Bottomley --- drivers/scsi/scsi_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/scsi/scsi_lib.c') diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 764a8b375ea..faee4757c03 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -367,7 +367,7 @@ static int scsi_req_map_sg(struct request *rq, struct scatterlist *sgl, int nsegs, unsigned bufflen, gfp_t gfp) { struct request_queue *q = rq->q; - int nr_pages = (bufflen + PAGE_SIZE - 1) >> PAGE_SHIFT; + int nr_pages = (bufflen + sgl[0].offset + PAGE_SIZE - 1) >> PAGE_SHIFT; unsigned int data_len = 0, len, bytes, off; struct page *page; struct bio *bio = NULL; -- cgit v1.2.3