From mboxrd@z Thu Jan 1 00:00:00 1970 From: zonque@gmail.com (Daniel Mack) Date: Sun, 18 Dec 2011 20:13:48 +0100 Subject: [PATCH] ARM: OMAP: avoid NULL pointer dereference when no PMIC is configured Message-ID: <1324235628-26439-1-git-send-email-zonque@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Daniel Mack Cc: Tony Lindgren --- arch/arm/mach-omap2/vp.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/vp.c b/arch/arm/mach-omap2/vp.c index 66bd700..5407173 100644 --- a/arch/arm/mach-omap2/vp.c +++ b/arch/arm/mach-omap2/vp.c @@ -41,6 +41,11 @@ void __init omap_vp_init(struct voltagedomain *voltdm) u32 val, sys_clk_rate, timeout, waittime; u32 vddmin, vddmax, vstepmin, vstepmax; + if (!voltdm->pmic) { + pr_err("%s: No PMIC configured.\n", __func__, voltdm->name); + return; + } + if (!voltdm->read || !voltdm->write) { pr_err("%s: No read/write API for accessing vdd_%s regs\n", __func__, voltdm->name); -- 1.7.7.4