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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-01-19 06:56:57 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2015-01-19 06:56:57 +0800
commit3542f6b1836d8940615104e22248bb9b7cf54f5f (patch)
tree6808fae6dfb12bb4b7e5e0df4efbe3e0dae8c537 /drivers/misc/mei
parentd885d4f3728f386034bb2f7a61b7f2054c49b2d4 (diff)
parentec6f34e5b552fb0a52e6aae1a5afbbb1605cc6cc (diff)
Merge 3.19-rc5 into char-misc-next
We want the 3.19-rc5 fixes in here for our testing. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei')
-rw-r--r--drivers/misc/mei/hw-me.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c
index ff2755062b44..06ff0a2ec960 100644
--- a/drivers/misc/mei/hw-me.c
+++ b/drivers/misc/mei/hw-me.c
@@ -234,6 +234,18 @@ static int mei_me_hw_reset(struct mei_device *dev, bool intr_enable)
struct mei_me_hw *hw = to_me_hw(dev);
u32 hcsr = mei_hcsr_read(hw);
+ /* H_RST may be found lit before reset is started,
+ * for example if preceding reset flow hasn't completed.
+ * In that case asserting H_RST will be ignored, therefore
+ * we need to clean H_RST bit to start a successful reset sequence.
+ */
+ if ((hcsr & H_RST) == H_RST) {
+ dev_warn(dev->dev, "H_RST is set = 0x%08X", hcsr);
+ hcsr &= ~H_RST;
+ mei_me_reg_write(hw, H_CSR, hcsr);
+ hcsr = mei_hcsr_read(hw);
+ }
+
hcsr |= H_RST | H_IG | H_IS;
if (intr_enable)