From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
In the case when the phy_mask is bitwise anded with the
phy_index bit is zero the continue statement currently jumps
to the next iteration of the while loop and phy_index is
never actually incremented, potentially causing an infinite
loop if phy_index is less than SCI_MAX_PHS. Fix this by
jumping to the increment of phy_index.
[ The goto is used to save one more level of nesting that
makes the code far wider than 80 columns. ]
Fixes: 80aebef7c112 ("[SCSI] isci: Fix a infinite loop.")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
drivers/scsi/isci/port_config.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/isci/port_config.c b/drivers/scsi/isci/port_config.c
index edb7be786c65..55dc7c1dbc2b 100644
--- a/drivers/scsi/isci/port_config.c
+++ b/drivers/scsi/isci/port_config.c
@@ -293,7 +293,7 @@ sci_mpc_agent_validate_phy_configuration(struct isci_host *ihost,
* This is expected and required to add the phy to the port. */
while (phy_index < SCI_MAX_PHYS) {
if ((phy_mask & (1 << phy_index)) == 0)
- continue;
+ goto next_index;
sci_phy_get_sas_address(&ihost->phys[phy_index],
&phy_assigned_address);
@@ -311,6 +311,7 @@ sci_mpc_agent_validate_phy_configuration(struct isci_host *ihost,
&ihost->phys[phy_index]);
assigned_phy_mask |= (1 << phy_index);
+next_index:
phy_index++;
}
--
2.17.0
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