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platform/x86: thinkpad_acpi: Initialize local in_tablet_mode and type

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linux-next reported in_tablet_mode and type may be used uninitialized
after:

b31800283868 ("platform/x86: thinkpad_acpi: Move tablet detection into separate function")

This turns out to be a false positive as the pr_info call cannot be
reached if tp_features.hotkey_tablet (global scope) is 0, and
in_tablet_mode and type are assigned in both places
tp_features.hotkey_tablet is assigned.

Regardless, to make it explicit and avoid further reports, initialize
in_tablet_mode to 0 and type to NULL.

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Lyude <lyude@redhat.com>
This commit is contained in:
Darren Hart 2016-12-14 14:45:48 -08:00
parent 1d161d4cd7
commit cb2bf25145
1 changed files with 2 additions and 2 deletions
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4
drivers/platform/x86/thinkpad_acpi.c
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@ -3143,8 +3143,8 @@ typedef tpacpi_keymap_entry_t tpacpi_keymap_t[TPACPI_HOTKEY_MAP_LEN];
static int hotkey_init_tablet_mode(void)
{
int in_tablet_mode, res;
char *type;
int in_tablet_mode = 0, res;
char *type = NULL;
if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) {
/* For X41t, X60t, X61t Tablets... */