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mmc: jz4740: Reset the device requesting the interrupt 

In case a bootloader leaves the device in a bad state,
requesting the interrupt before resetting results in a bad
interrupt loop.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
[Ezequiel: cleanup commit description]
Tested-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.co.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Zubair Lutfullah Kakakhel 2018-03-28 18:00:47 -03:00 committed by Ulf Hansson
parent 39e9ef1dca
commit 436a3cfddc
1 changed files with 2 additions and 1 deletions
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3
drivers/mmc/host/jz4740_mmc.c
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@ -1027,6 +1027,8 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
spin_lock_init(&host->lock);
host->irq_mask = 0xffff;
jz4740_mmc_reset(host);
ret = request_threaded_irq(host->irq, jz_mmc_irq, jz_mmc_irq_worker, 0,
dev_name(&pdev->dev), host);
if (ret) {
@ -1034,7 +1036,6 @@ static int jz4740_mmc_probe(struct platform_device* pdev)
goto err_free_gpios;
}
jz4740_mmc_reset(host);
jz4740_mmc_clock_disable(host);
timer_setup(&host->timeout_timer, jz4740_mmc_timeout, 0);