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ALSA: emu10k1: Fix emu1010 dock attach check 

The emu1010_firmware_thread() checks the previous dock status, but a
wrong register is recorded as the last status when the dock is plugged
in.  Usually this isn't a big issue since this value gets overwritten
by the next loop after one second.  But when a dock is unplugged
immediately after plugging, it means essentially missing undock
handling.

This patch addresses it by remembering the correct register value.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2016-11-02 16:38:21 +01:00
parent 43e575fabb
commit e8c44abeab
1 changed files with 6 additions and 6 deletions
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12
sound/pci/emu10k1/emu10k1_main.c
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@ -762,19 +762,19 @@ static int emu1010_firmware_thread(void *data)
}
snd_emu1010_fpga_write(emu, EMU_HANA_FPGA_CONFIG, 0);
snd_emu1010_fpga_read(emu, EMU_HANA_IRQ_STATUS, &reg);
snd_emu1010_fpga_read(emu, EMU_HANA_IRQ_STATUS, &tmp);
dev_info(emu->card->dev,
"emu1010: EMU_HANA+DOCK_IRQ_STATUS = 0x%x\n",
reg);
tmp);
/* ID, should read & 0x7f = 0x55 when FPGA programmed. */
snd_emu1010_fpga_read(emu, EMU_HANA_ID, &reg);
snd_emu1010_fpga_read(emu, EMU_HANA_ID, &tmp);
dev_info(emu->card->dev,
"emu1010: EMU_HANA+DOCK_ID = 0x%x\n", reg);
if ((reg & 0x1f) != 0x15) {
"emu1010: EMU_HANA+DOCK_ID = 0x%x\n", tmp);
if ((tmp & 0x1f) != 0x15) {
/* FPGA failed to be programmed */
dev_info(emu->card->dev,
"emu1010: Loading Audio Dock Firmware file failed, reg = 0x%x\n",
reg);
tmp);
continue;
}
dev_info(emu->card->dev,