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| author | Colin Ian King <colin.king@canonical.com> | 2021-04-28 13:00:10 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-04-28 13:56:27 -0700 |
| commit | 12c2bb96c3f1916624d671904430b7714b48dd71 (patch) | |
| tree | 749bb9a0ad505f6518a61830d9c1d51ec3eb6ecd /drivers | |
| parent | 9be02dd3858137f7bf83320568279eeda59faf01 (diff) | |
| download | linux-stable-12c2bb96c3f1916624d671904430b7714b48dd71.tar.gz linux-stable-12c2bb96c3f1916624d671904430b7714b48dd71.tar.bz2 linux-stable-12c2bb96c3f1916624d671904430b7714b48dd71.zip | |
net: dsa: ksz: Make reg_mib_cnt a u8 as it never exceeds 255
Currently the for-loop in ksz8_port_init_cnt is causing a static
analysis infinite loop warning with the comparison of
mib->cnt_ptr < dev->reg_mib_cnt. This occurs because mib->cnt_ptr
is a u8 and dev->reg_mib_cnt is an int and the analyzer determines
that mib->cnt_ptr potentially can wrap around to zero if the value
in dev->reg_mib_cnt is > 255. However, this value is never this
large, it is always less than 256 so make reg_mib_cnt a u8.
Addresses-Coverity: ("Infinite loop")
Fixes: e66f840c08a2 ("net: dsa: ksz: Add Microchip KSZ8795 DSA driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20210428120010.337959-1-colin.king@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/dsa/microchip/ksz_common.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h index e0bbdca64375..2e6bfd333f50 100644 --- a/drivers/net/dsa/microchip/ksz_common.h +++ b/drivers/net/dsa/microchip/ksz_common.h @@ -69,7 +69,7 @@ struct ksz_device { int cpu_ports; /* port bitmap can be cpu port */ int phy_port_cnt; int port_cnt; - int reg_mib_cnt; + u8 reg_mib_cnt; int mib_cnt; const struct mib_names *mib_names; phy_interface_t compat_interface; |