[PATCH 5.10 026/243] scsi: arcmsr: Fix the wrong CDB payload report to IOP
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: 2021-07-19 17:03:29
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Subsystem:
scsi subsystem, the rest · Maintainers:
"James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
From: ching Huang <redacted> [ Upstream commit 5b8644968d2ca85abb785e83efec36934974b0c2 ] This patch fixes the wrong CDB payload report to IOP. Link: https://lore.kernel.org/r/d2c97df3c817595c6faf582839316209022f70da.camel@areca.com.tw (local) Signed-off-by: ching Huang <redacted> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/scsi/arcmsr/arcmsr_hba.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index e4fdb473b990..4838f790dac7 100644
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c@@ -1928,8 +1928,12 @@ static void arcmsr_post_ccb(struct AdapterControlBlock *acb, struct CommandContr if (ccb->arc_cdb_size <= 0x300) arc_cdb_size = (ccb->arc_cdb_size - 1) >> 6 | 1; - else - arc_cdb_size = (((ccb->arc_cdb_size + 0xff) >> 8) + 2) << 1 | 1; + else { + arc_cdb_size = ((ccb->arc_cdb_size + 0xff) >> 8) + 2; + if (arc_cdb_size > 0xF) + arc_cdb_size = 0xF; + arc_cdb_size = (arc_cdb_size << 1) | 1; + } ccb_post_stamp = (ccb->smid | arc_cdb_size); writel(0, &pmu->inbound_queueport_high); writel(ccb_post_stamp, &pmu->inbound_queueport_low);
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2.30.2