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ALSA: x86: Fix possible stale interrupt calls

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Registering the irq handler at the too early place may cause a system
stall because the irq handler may be triggered before the other
initializations.  Move the irq handler registration to the later point.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2017-01-30 17:40:04 +01:00
parent 437af8f294
commit 033e925f68
1 changed files with 13 additions and 13 deletions
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26
sound/x86/intel_hdmi_lpe_audio.c
View File

@ -400,16 +400,6 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
return -EACCES; return -EACCES;
} }
/* setup interrupt handler */
ret = request_irq(irq, display_pipe_interrupt_handler,
0,
pdev->name,
NULL);
if (ret < 0) {
dev_err(&hlpe_pdev->dev, "request_irq failed\n");
goto error_irq;
}
/* alloc and save context */ /* alloc and save context */
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (ctx == NULL) { if (ctx == NULL) {
@ -438,11 +428,21 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
if (pdata == NULL) { if (pdata == NULL) {
dev_err(&hlpe_pdev->dev, "%s: quit: pdata not allocated by i915!!\n", __func__); dev_err(&hlpe_pdev->dev, "%s: quit: pdata not allocated by i915!!\n", __func__);
ret = -ENOMEM; ret = -ENOMEM;
goto error_probe; goto error_irq;
} }
platform_set_drvdata(pdev, ctx); platform_set_drvdata(pdev, ctx);
/* setup interrupt handler */
ret = request_irq(irq, display_pipe_interrupt_handler,
0,
pdev->name,
NULL);
if (ret < 0) {
dev_err(&hlpe_pdev->dev, "request_irq failed\n");
goto error_irq;
}
ret = hdmi_audio_probe(pdev, &ctx->had); ret = hdmi_audio_probe(pdev, &ctx->had);
if (ret < 0) if (ret < 0)
goto error_probe; goto error_probe;
@ -469,10 +469,10 @@ static int hdmi_lpe_audio_probe(struct platform_device *pdev)
return ret; return ret;
error_probe: error_probe:
kfree(ctx);
error_ctx:
free_irq(irq, NULL); free_irq(irq, NULL);
error_irq: error_irq:
kfree(ctx);
error_ctx:
iounmap(mmio_start); iounmap(mmio_start);
return ret; return ret;
} }