devm_kasprintf() can return a NULL pointer on failure,but this
returned value in davinci_lpsc_clk_register() is not checked.
Add NULL check in davinci_lpsc_clk_register(), to handle kernel
NULL pointer dereference error.
Fixes: c6ed4d734bc7 ("clk: davinci: New driver for davinci PSC clocks")
Signed-off-by: Charles Han <hanchunchao@inspur.com>
---
drivers/clk/davinci/psc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/clk/davinci/psc.c b/drivers/clk/davinci/psc.c
index b48322176c21..872fed50dece 100644
--- a/drivers/clk/davinci/psc.c
+++ b/drivers/clk/davinci/psc.c
@@ -277,6 +277,11 @@ davinci_lpsc_clk_register(struct device *dev, const char *name,
lpsc->pm_domain.name = devm_kasprintf(dev, GFP_KERNEL, "%s: %s",
best_dev_name(dev), name);
+ if (!lpsc->pm_domain.name) {
+ kfree(lpsc);
+ return ERR_PTR(-ENOMEM);
+ }
+
lpsc->pm_domain.attach_dev = davinci_psc_genpd_attach_dev;
lpsc->pm_domain.detach_dev = davinci_psc_genpd_detach_dev;
lpsc->pm_domain.flags = GENPD_FLAG_PM_CLK;
--
2.43.0