From: Jan Weitzel Date: Wed, 7 Dec 2011 19:50:16 +0000 (-0800) Subject: ARM: OMAP2+ i2c NACK without STP X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7b55623b7af8ae7182df47742a4f6de4830adb88;p=pandora-kernel.git ARM: OMAP2+ i2c NACK without STP On OMAP4 OMAP_I2C_STAT_NACK is causing a timeout on the next access. The isr cleans all flags in OMAP_I2C_CON_REG by setting OMAP_I2C_CON_STP OMAP_I2C_CON_STP is also set in omap_i2c_xfer_msg on the last message. According to the TI TSR the sequence for OMAP_I2C_STAT_NACK and OMAP_I2C_STAT_AL are nearly the same. Removing the OMAP_I2C_CON_STP part in the isr fix the problem. Tested on OMAP4430 and OMAP3530 (here NACK was not a problem) Fixes also booting on 2430sdp. Signed-off-by: Jan Weitzel Acked-by: Tony Lindgren --- Reading git-diff-tree failed