diff options
Diffstat (limited to 'target/linux/brcm2708/patches-3.10/0067-Avoid-responding-to-unexpected-I2C-interrupts.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-3.10/0067-Avoid-responding-to-unexpected-I2C-interrupts.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-3.10/0067-Avoid-responding-to-unexpected-I2C-interrupts.patch b/target/linux/brcm2708/patches-3.10/0067-Avoid-responding-to-unexpected-I2C-interrupts.patch new file mode 100644 index 0000000000..4d62046230 --- /dev/null +++ b/target/linux/brcm2708/patches-3.10/0067-Avoid-responding-to-unexpected-I2C-interrupts.patch @@ -0,0 +1,31 @@ +From 03f44ba654e40b60ffcec14030abf35152d0b639 Mon Sep 17 00:00:00 2001 +From: popcornmix <popcornmix@gmail.com> +Date: Thu, 13 Jun 2013 16:46:54 +0100 +Subject: [PATCH 067/174] Avoid responding to unexpected I2C interrupts + +--- + drivers/i2c/busses/i2c-bcm2708.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +--- a/drivers/i2c/busses/i2c-bcm2708.c ++++ b/drivers/i2c/busses/i2c-bcm2708.c +@@ -175,6 +175,11 @@ static irqreturn_t bcm2708_i2c_interrupt + + spin_lock(&bi->lock); + ++ /* we may see camera interrupts on the "other" I2C channel ++ Just return if we've not sent anything */ ++ if (!bi->nmsgs || !bi->msg ) ++ goto early_exit; ++ + s = bcm2708_rd(bi, BSC_S); + + if (s & (BSC_S_CLKT | BSC_S_ERR)) { +@@ -208,6 +213,7 @@ static irqreturn_t bcm2708_i2c_interrupt + handled = false; + } + ++early_exit: + spin_unlock(&bi->lock); + + return handled ? IRQ_HANDLED : IRQ_NONE; |