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ARM: OMAP2+: avoid NULL pointer dereference

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For OMAP4, volt_data is set in omap44xx_voltagedomains_init.
If the SoC is neither OMAP443X or OMAP446X, we end up with a
NULL in volt_data which causes a kernel oops.
This is the case when booting OMAP4470.

Signed-off-by: Nicolae Rosia <Nicolae_Rosia@mentor.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Nicolae Rosia 2016-11-01 11:49:25 +02:00 committed by Tony Lindgren
parent 4ae46efcff
commit 0ab11d8ea4
1 changed files with 6 additions and 0 deletions
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6
arch/arm/mach-omap2/voltage.c
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@ -87,6 +87,12 @@ int voltdm_scale(struct voltagedomain *voltdm,
return -ENODATA;
}
if (!voltdm->volt_data) {
pr_err("%s: No voltage data defined for vdd_%s\n",
__func__, voltdm->name);
return -ENODATA;
}
/* Adjust voltage to the exact voltage from the OPP table */
for (i = 0; voltdm->volt_data[i].volt_nominal != 0; i++) {
if (voltdm->volt_data[i].volt_nominal >= target_volt) {