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| author | Arjan van de Ven <arjan@linux.intel.com> | 2010-07-26 10:04:37 +0100 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2010-08-03 09:50:31 -0400 |
| commit | ed6f2b4da32913875355f5c9cbbb38e4168b7801 (patch) | |
| tree | eb195b81e86a047653f60e8ae17616a1252b143f /drivers/platform/x86/intel_scu_ipc.c | |
| parent | 51cd525dce018f298568d8e2e769b1a698ef91cd (diff) | |
| download | kernel_samsung_smdk4412-ed6f2b4da32913875355f5c9cbbb38e4168b7801.zip kernel_samsung_smdk4412-ed6f2b4da32913875355f5c9cbbb38e4168b7801.tar.gz kernel_samsung_smdk4412-ed6f2b4da32913875355f5c9cbbb38e4168b7801.tar.bz2 | |
zero the stack buffer before giving random garbage to the SCU
some messages take 4 bytes, but only fill 3 bytes....
this patch makes sure that whatever we send to the SCU is zeroed first
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform/x86/intel_scu_ipc.c')
| -rw-r--r-- | drivers/platform/x86/intel_scu_ipc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/platform/x86/intel_scu_ipc.c b/drivers/platform/x86/intel_scu_ipc.c index 1b0d0d5..b903420f 100644 --- a/drivers/platform/x86/intel_scu_ipc.c +++ b/drivers/platform/x86/intel_scu_ipc.c @@ -162,6 +162,8 @@ static int pwr_reg_rdwr(u16 *addr, u8 *data, u32 count, u32 op, u32 id) mutex_lock(&ipclock); + memset(cbuf, 0, sizeof(cbuf)); + if (ipcdev.pdev == NULL) { mutex_unlock(&ipclock); return -ENODEV; |