linux-kernel - [PATCH 4.4 239/312] ALSA: fm801: Initialize chip after IRQ handler is registered

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Date:   Fri,  8 May 2020 14:33:50 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Émeric MASCHINO <emeric.maschino@...il.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Takashi Iwai <tiwai@...e.de>
Subject: [PATCH 4.4 239/312] ALSA: fm801: Initialize chip after IRQ handler is registered

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

commit 610e1ae9b533be82b3aa118b907e0a703256913d upstream.

The commit b56fa687e02b ("ALSA: fm801: detect FM-only card earlier")
rearranged initialization calls, i.e. it makes snd_fm801_chip_init() to
be called before we register interrupt handler and set PCI bus
mastering.

Somehow it prevents FM801-AU to work properly. Thus, partially revert
initialization order changed by commit mentioned above.

Fixes: b56fa687e02b ("ALSA: fm801: detect FM-only card earlier")
Reported-by: Émeric MASCHINO <emeric.maschino@...il.com>
Tested-by: Émeric MASCHINO <emeric.maschino@...il.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: <stable@...r.kernel.org> # v4.5+
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/pci/fm801.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/pci/fm801.c
+++ b/sound/pci/fm801.c
@@ -1225,8 +1225,6 @@ static int snd_fm801_create(struct snd_c
 		}
 	}
 
-	snd_fm801_chip_init(chip);
-
 	if ((chip->tea575x_tuner & TUNER_ONLY) == 0) {
 		if (devm_request_irq(&pci->dev, pci->irq, snd_fm801_interrupt,
 				IRQF_SHARED, KBUILD_MODNAME, chip)) {
@@ -1238,6 +1236,8 @@ static int snd_fm801_create(struct snd_c
 		pci_set_master(pci);
 	}
 
+	snd_fm801_chip_init(chip);
+
 	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 		snd_fm801_free(chip);
 		return err;