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[04/14] mmc: jz4740: Reset the device requesting the interrupt

Message ID 20180309151219.18723-5-ezequiel@vanguardiasur.com.ar (mailing list archive)
State New, archived
Headers show

Commit Message

Ezequiel Garcia March 9, 2018, 3:12 p.m. UTC 
From: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>

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]
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
 drivers/mmc/host/jz4740_mmc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c
index 636741ac9031..0a8edd5b4052 100644
--- a/drivers/mmc/host/jz4740_mmc.c
+++ b/drivers/mmc/host/jz4740_mmc.c
@@ -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);