diff options
| author | Jaehoon Chung <jh80.chung@samsung.com> | 2016-10-21 19:57:57 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-10 16:38:53 +0100 |
| commit | b80fcd58e6f6ab1a68a6d251fb8bba67e03df8ae (patch) | |
| tree | 8f494fdef49e5f728d2b7e39ec435c6db2bcd3be | |
| parent | 1244d3c3a0f6f5bcfbf6364f2e75b7e4dfda9d82 (diff) | |
mmc: dw_mmc-pltfm: fix the potential NULL pointer dereference
commit 45c7a4908a307a023e237a64a3eadcafc4836493 upstream.
platform_get_resource can be returned the NULL pointer.
Then regs->start should be referred to NULL Pointer.
devm_ioremap_resource() checks whether res is NULL or not.
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/mmc/host/dw_mmc-pltfm.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/mmc/host/dw_mmc-pltfm.c b/drivers/mmc/host/dw_mmc-pltfm.c index c0bb0c793e84..dbbc4303bdd0 100644 --- a/drivers/mmc/host/dw_mmc-pltfm.c +++ b/drivers/mmc/host/dw_mmc-pltfm.c @@ -46,12 +46,13 @@ int dw_mci_pltfm_register(struct platform_device *pdev, host->pdata = pdev->dev.platform_data; regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); - /* Get registers' physical base address */ - host->phy_regs = regs->start; host->regs = devm_ioremap_resource(&pdev->dev, regs); if (IS_ERR(host->regs)) return PTR_ERR(host->regs); + /* Get registers' physical base address */ + host->phy_regs = regs->start; + platform_set_drvdata(pdev, host); return dw_mci_probe(host); } |