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| author | LABBE Corentin <clabbe.montjoie@gmail.com> | 2015-11-12 07:43:34 (GMT) |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2015-11-18 07:27:31 (GMT) |
| commit | 6f51bc340d2a1c71a2409f80f3e60fe2c44e35ae (patch) | |
| tree | bb6567c869fe3efae232e9f48204b9978e938efa | |
| parent | 090bc267ea1013bbb33778b343b4acd78b9c5d9b (diff) | |
| download | linux-6f51bc340d2a1c71a2409f80f3e60fe2c44e35ae.tar.xz | |
usb: chipidea: imx: fix a possible NULL dereference
of_match_device could return NULL, and so cause a NULL pointer
dereference later.
Reported-by: coverity (CID 1324138)
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
| -rw-r--r-- | drivers/usb/chipidea/ci_hdrc_imx.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c index 7c9b630..5a048b7 100644 --- a/drivers/usb/chipidea/ci_hdrc_imx.c +++ b/drivers/usb/chipidea/ci_hdrc_imx.c @@ -247,9 +247,14 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev) .flags = CI_HDRC_SET_NON_ZERO_TTHA, }; int ret; - const struct of_device_id *of_id = - of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); - const struct ci_hdrc_imx_platform_flag *imx_platform_flag = of_id->data; + const struct of_device_id *of_id; + const struct ci_hdrc_imx_platform_flag *imx_platform_flag; + + of_id = of_match_device(ci_hdrc_imx_dt_ids, &pdev->dev); + if (!of_id) + return -ENODEV; + + imx_platform_flag = of_id->data; data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) |