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remoteproc: st: fix check of syscon_regmap_lookup_by_phandle() return value

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syscon_regmap_lookup_by_phandle() returns either a valid pointer to
struct regmap or ERR_PTR() error value, check for NULL is invalid and
on error path may lead to oops, the change corrects the check.

Signed-off-by: Vladimir Zapolskiy <[email protected]>
Acked-by: Lee Jones <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
This commit is contained in:
Vladimir Zapolskiy 2016-03-19 15:31:10 +02:00 • committed by Bjorn Andersson
commit 4b28038fd6
1 changed files with 2 additions and 2 deletions
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4
drivers/remoteproc/st_remoteproc.c
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@ -189,9 +189,9 @@ static int st_rproc_parse_dt(struct platform_device *pdev)
}
ddata->boot_base = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
if (!ddata->boot_base) {
if (IS_ERR(ddata->boot_base)) {
dev_err(dev, "Boot base not found\n");
return -EINVAL;
return PTR_ERR(ddata->boot_base);
}
err = of_property_read_u32_index(np, "st,syscfg", 1,