From: James Bottomley Date: Tue, 10 Jun 2008 15:20:53 +0000 (-0500) Subject: [SCSI] sr: fix corrupt CD data after media change and delay X-Git-Tag: v2.6.26-rc7~17^2~2 X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=d1daeabf0da5bfa1943272ce508e2ba785730bf0;p=linux-2.6-omap-h63xx.git [SCSI] sr: fix corrupt CD data after media change and delay Reported-by: Geert Uytterhoeven If you delay 30s or more before mounting a CD after inserting it then the kernel has the wrong value for the CD size. http://marc.info/?t=121276133000001 The problem is in sr_test_unit_ready(): the function eats unit attentions without adjusting the sdev->changed status. This means that when the CD signals changed media via unit attention, we can ignore it. Fix by making sr_test_unit_ready() adjust the changed status. Tested-by: Geert Uytterhoeven Cc: Stable Tree Signed-off-by: James Bottomley --- diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c index 7ee86d4a761..c82df8bd4d8 100644 --- a/drivers/scsi/sr.c +++ b/drivers/scsi/sr.c @@ -178,6 +178,9 @@ int sr_test_unit_ready(struct scsi_device *sdev, struct scsi_sense_hdr *sshdr) the_result = scsi_execute_req(sdev, cmd, DMA_NONE, NULL, 0, sshdr, SR_TIMEOUT, retries--); + if (scsi_sense_valid(sshdr) && + sshdr->sense_key == UNIT_ATTENTION) + sdev->changed = 1; } while (retries > 0 && (!scsi_status_is_good(the_result) ||