diff options
| author | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2023-05-13 14:29:31 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2023-05-30 11:25:24 +0300 |
| commit | 1d9e93fad549bc38f593147479ee063f2872c170 (patch) | |
| tree | 6980243f23d41b3b8c4f22eb8fb382859497c285 /drivers/memory/brcmstb_dpfe.c | |
| parent | 3d56c7364389fce14547803fef56d6f2cab5d366 (diff) | |
| download | linux-1d9e93fad549bc38f593147479ee063f2872c170.tar.xz | |
memory: brcmstb_dpfe: fix testing array offset after use
Code should first check for valid value of array offset, then use it as
the index. Fixes smatch warning:
drivers/memory/brcmstb_dpfe.c:443 __send_command() error: testing array offset 'cmd' after use.
Fixes: 2f330caff577 ("memory: brcmstb: Add driver for DPFE")
Acked-by: Markus Mayer <mmayer@broadcom.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20230513112931.176066-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Diffstat (limited to 'drivers/memory/brcmstb_dpfe.c')
| -rw-r--r-- | drivers/memory/brcmstb_dpfe.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/memory/brcmstb_dpfe.c b/drivers/memory/brcmstb_dpfe.c index 76c82e9c8fce..9339f80b21c5 100644 --- a/drivers/memory/brcmstb_dpfe.c +++ b/drivers/memory/brcmstb_dpfe.c @@ -434,15 +434,17 @@ static void __finalize_command(struct brcmstb_dpfe_priv *priv) static int __send_command(struct brcmstb_dpfe_priv *priv, unsigned int cmd, u32 result[]) { - const u32 *msg = priv->dpfe_api->command[cmd]; void __iomem *regs = priv->regs; unsigned int i, chksum, chksum_idx; + const u32 *msg; int ret = 0; u32 resp; if (cmd >= DPFE_CMD_MAX) return -1; + msg = priv->dpfe_api->command[cmd]; + mutex_lock(&priv->lock); /* Wait for DCPU to become ready */ |