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uniwill_wmi: Zero BFLG according to wmi impl.

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Note: weird behaviour but BFLG is always zeroed
This commit is contained in:
Christoffer Sandberg 2023-02-14 11:03:58 +01:00
parent d231df67ff
commit 852cba4523
1 changed files with 14 additions and 2 deletions
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16
src/uniwill_wmi.c
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@ -131,8 +131,14 @@ static u32 uw_ec_read_addr_direct(u8 addr_low, u8 addr_high, union uw_ec_read_re
ec_read(UNIWILL_EC_REG_FLAGS, &flags);
if ((flags & (1 << UNIWILL_EC_BIT_BFLG)) > 0) {
output->dword = 0xfefefefe;
pr_debug("read: BFLG set\n");
// Note: weird behaviour but BFLG is always zeroed
flags &= ~(1 << UNIWILL_EC_BIT_BFLG);
ec_write(UNIWILL_EC_REG_FLAGS, flags);
mutex_unlock(&uniwill_ec_lock);
output->dword = 0xfefefefe;
return -EBUSY;
}
@ -187,8 +193,14 @@ static u32 uw_ec_write_addr_direct(u8 addr_low, u8 addr_high, u8 data_low, u8 da
ec_read(UNIWILL_EC_REG_FLAGS, &flags);
if ((flags & (1 << UNIWILL_EC_BIT_BFLG)) > 0) {
output->dword = 0xfefefefe;
pr_debug("write: BFLG set\n");
// Note: weird behaviour but BFLG is always zeroed
flags &= ~(1 << UNIWILL_EC_BIT_BFLG);
ec_write(UNIWILL_EC_REG_FLAGS, flags);
mutex_unlock(&uniwill_ec_lock);
output->dword = 0xfefefefe;
return -EBUSY;
}