linux-kernel - [PATCH 0/2] provide isr for card-detect interrupts

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Message-ID: <20170411102056.2869-1-jszhang@marvell.com>
Date:   Tue, 11 Apr 2017 18:20:54 +0800
From:   Jisheng Zhang <jszhang@...vell.com>
To:     <ulf.hansson@...aro.org>, <adrian.hunter@...el.com>
CC:     <linux-mmc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Jisheng Zhang <jszhang@...vell.com>
Subject: [PATCH 0/2] provide isr for card-detect interrupts

We found one issue on BG4CT platforms with GPIO for the card detect
interrupt: remove sdcard when there's read write access to the sdcard,
sometimes the card remove event can't be handled for a long time, so
the  system still think the sdcard is still plugged in. It turns out
that the sdhci_card_event() is missing in common slot gpio's card
detect isr. This should be common for all sdhci platforms.

We fix this issue by providing sdhci's own isr for card-detect
interrupts. In this own isr, we call sdhci_card_event() then process
the change of state.

patch1 is to prepare the fix in slot-gpio
patch2 is the real fix

Jisheng Zhang (2):
  mmc: slot-gpio: check cd_gpio before setting up cd_gpio_isr
  mmc: sdhci: provide isr for card-detect interrupts

 drivers/mmc/core/slot-gpio.c |  3 +++
 drivers/mmc/host/sdhci.c     | 12 ++++++++++++
 2 files changed, 15 insertions(+)

-- 
2.11.0