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i2c: pxa: use master-abort for device probes 

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>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
alistair/sunxi64-5.8
Russell King 2020-05-06 10:36:43 +01:00 committed by Wolfram Sang
parent e81c979f4e
commit 2fd6cbf41a
1 changed files with 2 additions and 8 deletions
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10
drivers/i2c/busses/i2c-pxa.c
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@ -940,14 +940,8 @@ static void i2c_pxa_irq_txempty(struct pxa_i2c *i2c, u32 isr)
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);
}