diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/819-v5.8-i2c-pxa-clear-all-master-action-bits-in-i2c_pxa_stop.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/819-v5.8-i2c-pxa-clear-all-master-action-bits-in-i2c_pxa_stop.patch | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/target/linux/generic/backport-5.4/819-v5.8-i2c-pxa-clear-all-master-action-bits-in-i2c_pxa_stop.patch b/target/linux/generic/backport-5.4/819-v5.8-i2c-pxa-clear-all-master-action-bits-in-i2c_pxa_stop.patch deleted file mode 100644 index 70fbffc47f..0000000000 --- a/target/linux/generic/backport-5.4/819-v5.8-i2c-pxa-clear-all-master-action-bits-in-i2c_pxa_stop.patch +++ /dev/null @@ -1,38 +0,0 @@ -From: Russell King <rmk+kernel@armlinux.org.uk> -Bcc: linux@mail.armlinux.org.uk -Subject: [PATCH 5/7] i2c: pxa: clear all master action bits in - i2c_pxa_stop_message() -MIME-Version: 1.0 -Content-Disposition: inline -Content-Transfer-Encoding: 8bit -Content-Type: text/plain; charset="utf-8" - -If we timeout during a message transfer, the control register may -contain bits that cause an action to be set. Read-modify-writing the -register leaving these bits set may trigger the hardware to attempt -one of these actions unintentionally. - -Always clear these bits when cleaning up after a message or after -a timeout. - -Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> ---- - drivers/i2c/busses/i2c-pxa.c | 6 ++---- - 1 file changed, 2 insertions(+), 4 deletions(-) - ---- a/drivers/i2c/busses/i2c-pxa.c -+++ b/drivers/i2c/busses/i2c-pxa.c -@@ -754,11 +754,9 @@ static inline void i2c_pxa_stop_message( - { - u32 icr; - -- /* -- * Clear the STOP and ACK flags -- */ -+ /* Clear the START, STOP, ACK, TB and MA flags */ - icr = readl(_ICR(i2c)); -- icr &= ~(ICR_STOP | ICR_ACKNAK); -+ icr &= ~(ICR_START | ICR_STOP | ICR_ACKNAK | ICR_TB | ICR_MA); - writel(icr, _ICR(i2c)); - } - |