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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:10:26 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 10:10:26 +0000 |
commit | 116e0f61852489520aaad930b8fcbe40834819bf (patch) | |
tree | e7cd8828fee4cf285d0b49d2eccc532ac1c064af /drivers/scsi/scsi.c | |
parent | Releasing progress-linux version 6.1.76-1~progress6.99u1. (diff) | |
download | linux-116e0f61852489520aaad930b8fcbe40834819bf.tar.xz linux-116e0f61852489520aaad930b8fcbe40834819bf.zip |
Merging upstream version 6.1.82.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/scsi/scsi.c')
-rw-r--r-- | drivers/scsi/scsi.c | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index 3cda5d26b..e70ab8db3 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -328,21 +328,39 @@ static int scsi_vpd_inquiry(struct scsi_device *sdev, unsigned char *buffer, return result + 4; } +enum scsi_vpd_parameters { + SCSI_VPD_HEADER_SIZE = 4, + SCSI_VPD_LIST_SIZE = 36, +}; + static int scsi_get_vpd_size(struct scsi_device *sdev, u8 page) { - unsigned char vpd_header[SCSI_VPD_HEADER_SIZE] __aligned(4); + unsigned char vpd[SCSI_VPD_LIST_SIZE] __aligned(4); int result; if (sdev->no_vpd_size) return SCSI_DEFAULT_VPD_LEN; /* + * Fetch the supported pages VPD and validate that the requested page + * number is present. + */ + if (page != 0) { + result = scsi_vpd_inquiry(sdev, vpd, 0, sizeof(vpd)); + if (result < SCSI_VPD_HEADER_SIZE) + return 0; + + result -= SCSI_VPD_HEADER_SIZE; + if (!memchr(&vpd[SCSI_VPD_HEADER_SIZE], page, result)) + return 0; + } + /* * Fetch the VPD page header to find out how big the page * is. This is done to prevent problems on legacy devices * which can not handle allocation lengths as large as * potentially requested by the caller. */ - result = scsi_vpd_inquiry(sdev, vpd_header, page, sizeof(vpd_header)); + result = scsi_vpd_inquiry(sdev, vpd, page, SCSI_VPD_HEADER_SIZE); if (result < 0) return 0; |