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| author | Zhang Changzhong <zhangchangzhong@huawei.com> | 2020-12-08 04:54:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-10 18:23:56 +0300 |
| commit | 428bb001143cf5bfb65aa4ae90d4ebc95f82d007 (patch) | |
| tree | 03e684366fd9242540b2cae90de4a8f8e2fa3aac /Documentation | |
| parent | 1c12c27086dcef853832a7cbebcb48bdac8104b6 (diff) | |
| download | linux-428bb001143cf5bfb65aa4ae90d4ebc95f82d007.tar.xz | |
slimbus: qcom: fix potential NULL dereference in qcom_slim_prg_slew()
platform_get_resource_byname() may fail and in this case a NULL
dereference will occur.
Fix it to use devm_platform_ioremap_resource_byname() instead of calling
platform_get_resource_byname() and devm_ioremap().
This is detected by Coccinelle semantic patch.
@@
expression pdev, res, n, t, e, e1, e2;
@@
res = \(platform_get_resource\|platform_get_resource_byname\)(pdev, t,
n);
+ if (!res)
+ return -EINVAL;
... when != res == NULL
e = devm_ioremap(e1, res->start, e2);
Fixes: ad7fcbc308b0 ("slimbus: qcom: Add Qualcomm Slimbus controller driver")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1607392473-20610-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions