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authorSonasath, Moiz <m-sonasath@ti.com>2009-07-21 11:14:40 -0400
committerBen Dooks <ben-linux@fluff.org>2009-07-29 20:03:24 -0400
commit04c688dd7a65935568b44629bfaa122eddf76e94 (patch)
tree05255936d55e6e680ba38b29255fbb6cba02655b /drivers/i2c/busses/i2c-omap.c
parentbfb6b6588af5ff762222cee79152d2be738ccc06 (diff)
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 <m-sonasath@ti.com> Signed-off-by: Vikram pandita <vikram.pandita@ti.com> [ben-linux@fluff.org: fixed mail format and added i2c-omap to subject] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'drivers/i2c/busses/i2c-omap.c')
-rw-r--r--drivers/i2c/busses/i2c-omap.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index a69665788513..5c508ccf4384 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)
685 err |= OMAP_I2C_STAT_AL; 685 err |= OMAP_I2C_STAT_AL;
686 } 686 }
687 if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK | 687 if (stat & (OMAP_I2C_STAT_ARDY | OMAP_I2C_STAT_NACK |
688 OMAP_I2C_STAT_AL)) 688 OMAP_I2C_STAT_AL)) {
689 omap_i2c_complete_cmd(dev, err); 689 omap_i2c_complete_cmd(dev, err);
690 return IRQ_HANDLED;
691 }
690 if (stat & (OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR)) { 692 if (stat & (OMAP_I2C_STAT_RRDY | OMAP_I2C_STAT_RDR)) {
691 u8 num_bytes = 1; 693 u8 num_bytes = 1;
692 if (dev->fifo_size) { 694 if (dev->fifo_size) {