| From: Russell King <rmk+kernel@armlinux.org.uk> |
| Bcc: linux@mail.armlinux.org.uk |
| Subject: [PATCH 6/7] i2c: pxa: use master-abort for device probes |
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| |
| Use master-abort to send the stop condition after an address cycle |
| rather than resetting the controller. |
| |
| Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> |
| --- |
| drivers/i2c/busses/i2c-pxa.c | 10 ++-------- |
| 1 file changed, 2 insertions(+), 8 deletions(-) |
| |
| --- a/drivers/i2c/busses/i2c-pxa.c |
| +++ b/drivers/i2c/busses/i2c-pxa.c |
| @@ -899,14 +899,8 @@ static void i2c_pxa_irq_txempty(struct p |
| icr &= ~ICR_ALDIE; |
| icr |= ICR_START | ICR_TB; |
| } else { |
| - if (i2c->msg->len == 0) { |
| - /* |
| - * Device probes have a message length of zero |
| - * and need the bus to be reset before it can |
| - * be used again. |
| - */ |
| - i2c_pxa_reset(i2c); |
| - } |
| + if (i2c->msg->len == 0) |
| + icr |= ICR_MA; |
| i2c_pxa_master_complete(i2c, 0); |
| } |
| |