From: Sonasath, Moiz Date: Tue, 21 Jul 2009 15:14:40 +0000 (-0500) Subject: i2c-omap: In case of a NACK|ARDY|AL return from the ISR X-Git-Tag: v2.6.31-rc5~17^2~1 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=04c688dd7a65935568b44629bfaa122eddf76e94;p=profile%2Fivi%2Fkernel-x86-ivi.git i2c-omap: In case of a NACK|ARDY|AL return from the ISR In case of a NACK or ARDY or AL interrupt, complete the request. There is no need to service the RRDY/RDR or XRDY/XDR interrupts. Refer TRM SWPU114: Figure 18-31.I2C Master Transmitter Mode, Interrupt Method, in F/S and HS Modes http://focus.ti.com/pdfs/wtbu/SWPU114T_PrelimFinalEPDF_06_25_2009.pdf Signed-off-by: Moiz Sonasath Signed-off-by: Vikram pandita [ben-linux@fluff.org: fixed mail format and added i2c-omap to subject] Signed-off-by: Ben Dooks --- diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index a696657..5c508cc 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -685,8 +685,10 @@ omap_i2c_isr(int this_irq, void *dev_id) err |= OMAP_I2C_STAT_AL; } if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK | - OMAP_I2C_STAT_AL)) + OMAP_I2C_STAT_AL)) { omap_i2c_complete_cmd(dev, err); + return IRQ_HANDLED; + } if (stat & (OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR)) { u8 num_bytes = 1; if (dev->fifo_size) {