diff options
| author | Zhang Changzhong <zhangchangzhong@huawei.com> | 2020-12-08 09:54:20 +0800 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-12-10 13:28:08 -0600 |
| commit | c3d4e5b12672bbdf63f4cc933e3169bc6bbec8da (patch) | |
| tree | bfaed931b91efbedf9bb40e633f8cf7b6edb2a69 /drivers/remoteproc | |
| parent | cca21000261b2364991ecdb0d9e66b26ad9c4b4e (diff) | |
remoteproc: qcom: Fix potential NULL dereference in adsp_init_mmio()
platform_get_resource() may fail and in this case a NULL dereference
will occur.
Fix it to use devm_platform_ioremap_resource() instead of calling
platform_get_resource() 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: dc160e449122 ("remoteproc: qcom: Introduce Non-PAS ADSP PIL driver")
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Link: https://lore.kernel.org/r/1607392460-20516-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc')
| -rw-r--r-- | drivers/remoteproc/qcom_q6v5_adsp.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/remoteproc/qcom_q6v5_adsp.c b/drivers/remoteproc/qcom_q6v5_adsp.c index 2f8f38408eb7..e02450225e4a 100644 --- a/drivers/remoteproc/qcom_q6v5_adsp.c +++ b/drivers/remoteproc/qcom_q6v5_adsp.c @@ -364,15 +364,12 @@ static int adsp_init_mmio(struct qcom_adsp *adsp, struct platform_device *pdev) { struct device_node *syscon; - struct resource *res; int ret; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - adsp->qdsp6ss_base = devm_ioremap(&pdev->dev, res->start, - resource_size(res)); - if (!adsp->qdsp6ss_base) { + adsp->qdsp6ss_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(adsp->qdsp6ss_base)) { dev_err(adsp->dev, "failed to map QDSP6SS registers\n"); - return -ENOMEM; + return PTR_ERR(adsp->qdsp6ss_base); } syscon = of_parse_phandle(pdev->dev.of_node, "qcom,halt-regs", 0); |