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goldfish: fix kernel panic when using multiple adb connection

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When using multiple adb on 64 bit kernel to transfer data,
the goldfish pipe interrupt will crash the kernel.

Signed-off-by: Jun Tian <jun.j.tian@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jun Tian 2014-05-12 16:54:57 +01:00 committed by Greg Kroah-Hartman
parent 49a75c444f
commit 25c72c786c
1 changed files with 3 additions and 0 deletions
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3
drivers/platform/goldfish/goldfish_pipe.c
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@ -469,6 +469,9 @@ static irqreturn_t goldfish_pipe_interrupt(int irq, void *dev_id)
#ifdef CONFIG_64BIT #ifdef CONFIG_64BIT
channel = (u64)readl(dev->base + PIPE_REG_CHANNEL_HIGH) << 32; channel = (u64)readl(dev->base + PIPE_REG_CHANNEL_HIGH) << 32;
if (channel == 0)
break;
#endif #endif
channel |= readl(dev->base + PIPE_REG_CHANNEL); channel |= readl(dev->base + PIPE_REG_CHANNEL);