[ Upstream commit b61b04ad81d5f975349d66abbecabf96ba211140 ]
Fix the condition which verifies that doorbell address is inside the
doorbell bar by checking that the end of the address is within range
as well.
Signed-off-by: Denis Bolotin <dbolo...@marvell.com>
Signed-off-by: Michal Kalderon <mkalde...@marvell.com>
Signed-off-by: Ariel Elior <ael...@marvell.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/net/ethernet/qlogic/qed/qed_dev.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c
b/drivers/net/ethernet/qlogic/qed/qed_dev.c
index ff0bbf8d073d6..228891e459bc0 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_dev.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c
@@ -102,11 +102,15 @@ static void qed_db_recovery_dp_entry(struct qed_hwfn
*p_hwfn,
/* Doorbell address sanity (address within doorbell bar range) */
static bool qed_db_rec_sanity(struct qed_dev *cdev,
- void __iomem *db_addr, void *db_data)
+ void __iomem *db_addr,
+ enum qed_db_rec_width db_width,
+ void *db_data)
{
+ u32 width = (db_width == DB_REC_WIDTH_32B) ? 32 : 64;
+
/* Make sure doorbell address is within the doorbell bar */
if (db_addr < cdev->doorbells ||
- (u8 __iomem *)db_addr >
+ (u8 __iomem *)db_addr + width >
(u8 __iomem *)cdev->doorbells + cdev->db_size) {
WARN(true,
"Illegal doorbell address: %p. Legal range for doorbell
addresses is [%p..%p]\n",
@@ -159,7 +163,7 @@ int qed_db_recovery_add(struct qed_dev *cdev,
}
/* Sanitize doorbell address */
- if (!qed_db_rec_sanity(cdev, db_addr, db_data))
+ if (!qed_db_rec_sanity(cdev, db_addr, db_width, db_data))
return -EINVAL;
/* Obtain hwfn from doorbell address */
@@ -205,10 +209,6 @@ int qed_db_recovery_del(struct qed_dev *cdev,
return 0;
}
- /* Sanitize doorbell address */
- if (!qed_db_rec_sanity(cdev, db_addr, db_data))
- return -EINVAL;
-
/* Obtain hwfn from doorbell address */
p_hwfn = qed_db_rec_find_hwfn(cdev, db_addr);
@@ -317,7 +317,7 @@ static void qed_db_recovery_ring(struct qed_hwfn *p_hwfn,
/* Sanity */
if (!qed_db_rec_sanity(p_hwfn->cdev, db_entry->db_addr,
- db_entry->db_data))
+ db_entry->db_width, db_entry->db_data))
return;
/* Flush the write combined buffer. Since there are multiple doorbelling
--
2.20.1
