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| author | Andrzej Hajda <a.hajda@samsung.com> | 2015-09-24 16:00:22 +0200 |
|---|---|---|
| committer | Darren Hart <dvhart@linux.intel.com> | 2015-10-03 09:41:54 -0700 |
| commit | 963406ffa6e77ae85b400a9bc8b747813c4497cf (patch) | |
| tree | 463ef0ee4b97294297d69fa735d76f5ef60f8240 /drivers/platform/x86/sony-laptop.c | |
| parent | daea5a65dec21de4b1f83c05162b5cb66b1f6c4c (diff) | |
| download | linux-963406ffa6e77ae85b400a9bc8b747813c4497cf.tar.gz linux-963406ffa6e77ae85b400a9bc8b747813c4497cf.tar.bz2 linux-963406ffa6e77ae85b400a9bc8b747813c4497cf.zip | |
sony-laptop: Fix handling sony_nc_hotkeys_decode result
sony_nv_hotkeys_decode can return a negative value. real_ev is a u32 variable.
The check for real_ev > 0 is incorrect.
Use an intermediate ret variable.
The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1].
[1]: http://permalink.gmane.org/gmane.linux.kernel/2046107
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
[dvhart: clarify commit msg, drop superfluous else block]
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Diffstat (limited to 'drivers/platform/x86/sony-laptop.c')
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index aeb80d1c2b07..f73c29558cd3 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -1204,6 +1204,8 @@ static void sony_nc_notify(struct acpi_device *device, u32 event) { u32 real_ev = event; u8 ev_type = 0; + int ret; + dprintk("sony_nc_notify, event: 0x%.2x\n", event); if (event >= 0x90) { @@ -1225,13 +1227,12 @@ static void sony_nc_notify(struct acpi_device *device, u32 event) case 0x0100: case 0x0127: ev_type = HOTKEY; - real_ev = sony_nc_hotkeys_decode(event, handle); + ret = sony_nc_hotkeys_decode(event, handle); - if (real_ev > 0) - sony_laptop_report_input_event(real_ev); - else - /* restore the original event for reporting */ - real_ev = event; + if (ret > 0) { + sony_laptop_report_input_event(ret); + real_ev = ret; + } break; |