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| author | Henrique de Moraes Holschuh <hmh@hmh.eng.br> | 2010-08-09 23:48:20 -0300 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2010-08-16 11:54:52 -0400 |
| commit | 34a656d22f5539f613b93e7a1d14b4bd53592505 (patch) | |
| tree | 7b664b042426531f9f52e4f6f4442a94d35208c6 /drivers/platform | |
| parent | 217f09631a420295a9688e18aa4dbad1b385e56c (diff) | |
| download | blackbird-op-linux-34a656d22f5539f613b93e7a1d14b4bd53592505.tar.gz blackbird-op-linux-34a656d22f5539f613b93e7a1d14b4bd53592505.zip | |
thinkpad-acpi: lock down size of hotkey keymap
Use a safer coding style for the hotkey keymap. This does not fix any
problems, as the current code is correct. But it might help avoid
mistakes in the future.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/thinkpad_acpi.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index b9430e887e95..b0b66fbd796c 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -1911,6 +1911,17 @@ enum { /* hot key scan codes (derived from ACPI DSDT) */ TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, TP_ACPI_HOTKEYSCAN_MUTE, TP_ACPI_HOTKEYSCAN_THINKPAD, + TP_ACPI_HOTKEYSCAN_UNK1, + TP_ACPI_HOTKEYSCAN_UNK2, + TP_ACPI_HOTKEYSCAN_UNK3, + TP_ACPI_HOTKEYSCAN_UNK4, + TP_ACPI_HOTKEYSCAN_UNK5, + TP_ACPI_HOTKEYSCAN_UNK6, + TP_ACPI_HOTKEYSCAN_UNK7, + TP_ACPI_HOTKEYSCAN_UNK8, + + /* Hotkey keymap size */ + TPACPI_HOTKEY_MAP_LEN }; enum { /* Keys/events available through NVRAM polling */ @@ -3113,7 +3124,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) * If the above is too much to ask, don't change the keymap. * Ask the thinkpad-acpi maintainer to do it, instead. */ - static u16 ibm_keycode_map[] __initdata = { + static u16 ibm_keycode_map[TPACPI_HOTKEY_MAP_LEN] __initdata = { /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP, KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, @@ -3147,7 +3158,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, }; - static u16 lenovo_keycode_map[] __initdata = { + static u16 lenovo_keycode_map[TPACPI_HOTKEY_MAP_LEN] __initdata = { /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, @@ -3191,7 +3202,6 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, }; -#define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map) #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map) #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0]) @@ -3469,7 +3479,8 @@ static bool hotkey_notify_hotkey(const u32 hkey, *send_acpi_ev = true; *ignore_acpi_ev = false; - if (scancode > 0 && scancode < 0x21) { + /* HKEY event 0x1001 is scancode 0x00 */ + if (scancode > 0 && scancode <= TPACPI_HOTKEY_MAP_LEN) { scancode--; if (!(hotkey_source_mask & (1 << scancode))) { tpacpi_input_send_key_masked(scancode); |
