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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-13 14:48:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-13 14:48:10 -0700
commit6a251b0ab67989f468f4cb65179e0cf40cf8c295 (patch)
treef0e857619ca27e552fd0e9e929d428ab5faefd8b
parent9e766d81b1f432826fd773fc5d679b8a8095e941 (diff)
parent5051d411ec87381693433d24c4488b2fa4a6306c (diff)
downloadop-kernel-dev-6a251b0ab67989f468f4cb65179e0cf40cf8c295.zip
op-kernel-dev-6a251b0ab67989f468f4cb65179e0cf40cf8c295.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: mfd: Clean up after WM83xx AUXADC interrupt if it arrives late
-rw-r--r--drivers/mfd/wm831x-core.c3
-rw-r--r--drivers/mfd/wm8350-core.c4
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mfd/wm831x-core.c b/drivers/mfd/wm831x-core.c
index a3d5728..f2ab025 100644
--- a/drivers/mfd/wm831x-core.c
+++ b/drivers/mfd/wm831x-core.c
@@ -349,6 +349,9 @@ int wm831x_auxadc_read(struct wm831x *wm831x, enum wm831x_auxadc input)
goto disable;
}
+ /* If an interrupt arrived late clean up after it */
+ try_wait_for_completion(&wm831x->auxadc_done);
+
/* Ignore the result to allow us to soldier on without IRQ hookup */
wait_for_completion_timeout(&wm831x->auxadc_done, msecs_to_jiffies(5));
diff --git a/drivers/mfd/wm8350-core.c b/drivers/mfd/wm8350-core.c
index e400a3b..b580748 100644
--- a/drivers/mfd/wm8350-core.c
+++ b/drivers/mfd/wm8350-core.c
@@ -363,6 +363,10 @@ int wm8350_read_auxadc(struct wm8350 *wm8350, int channel, int scale, int vref)
reg |= 1 << channel | WM8350_AUXADC_POLL;
wm8350_reg_write(wm8350, WM8350_DIGITISER_CONTROL_1, reg);
+ /* If a late IRQ left the completion signalled then consume
+ * the completion. */
+ try_wait_for_completion(&wm8350->auxadc_done);
+
/* We ignore the result of the completion and just check for a
* conversion result, allowing us to soldier on if the IRQ
* infrastructure is not set up for the chip. */
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