This is an automatic generated email to let you know that the following patch were queued at the http://git.linuxtv.org/media_tree.git tree: Subject: [media] img-ir/hw: Always read data to clear buffer Author: Dylan Rajaratnam <dylan.rajaratnam@xxxxxxxxxx> Date: Mon Nov 17 09:17:45 2014 -0300 A problem was found on Polaris where if the unit it booted via the power button on the infrared remote then the next button press on the remote would return the key code used to power on the unit. The sequence is: - The polaris powered off but with the powerdown controller (PDC) block still powered. - Press power key on remote, IR block receives the key. - Kernel starts, IR code is in IMG_IR_DATA_x but neither IMG_IR_RXDVAL or IMG_IR_RXDVALD2 are set. - Wait any amount of time. - Press any key. - IMG_IR_RXDVAL or IMG_IR_RXDVALD2 is set but IMG_IR_DATA_x is unchanged since the powerup key data was never read. This is worked around by always reading the IMG_IR_DATA_x in img_ir_set_decoder(), rather than only when the IMG_IR_RXDVAL or IMG_IR_RXDVALD2 bit is set. Signed-off-by: Dylan Rajaratnam <dylan.rajaratnam@xxxxxxxxxx> Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> # v3.15+ Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx> drivers/media/rc/img-ir/img-ir-hw.c | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) --- http://git.linuxtv.org/media_tree.git?a=commitdiff;h=ea0de4ec5489da0fe738b274effac4f950e93d76 diff --git a/drivers/media/rc/img-ir/img-ir-hw.c b/drivers/media/rc/img-ir/img-ir-hw.c index ec49f94..9db0653 100644 --- a/drivers/media/rc/img-ir/img-ir-hw.c +++ b/drivers/media/rc/img-ir/img-ir-hw.c @@ -541,10 +541,12 @@ static void img_ir_set_decoder(struct img_ir_priv *priv, if (ir_status & (IMG_IR_RXDVAL | IMG_IR_RXDVALD2)) { ir_status &= ~(IMG_IR_RXDVAL | IMG_IR_RXDVALD2); img_ir_write(priv, IMG_IR_STATUS, ir_status); - img_ir_read(priv, IMG_IR_DATA_LW); - img_ir_read(priv, IMG_IR_DATA_UP); } + /* always read data to clear buffer if IR wakes the device */ + img_ir_read(priv, IMG_IR_DATA_LW); + img_ir_read(priv, IMG_IR_DATA_UP); + /* stop the end timer and switch back to normal mode */ del_timer_sync(&hw->end_timer); hw->mode = IMG_IR_M_NORMAL; -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html