From: Thomas Kavanagh <tkavanagh@juniper.net>
Date: Fri, 21 Sep 2012 03:20:46 +0000 (-0700)
Subject: i2c: algo: pca: Fix chip reset function for PCA9665
X-Git-Tag: v3.7-rc1~50^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a76e7c6821b5dddf69db9d76ec282819545f5b73;p=pandora-kernel.git

i2c: algo: pca: Fix chip reset function for PCA9665

The parameter passed to pca9665_reset is adap->data (which is bus driver
specific), not i2c_algp_pca_data *adap. pca9665_reset expects it to be
i2c_algp_pca_data *adap. All other wrappers from the algo call back to
the bus driver, which knows to handle its custom data. Only pca9665_reset
resides inside the algorithm code and does not know how to handle a custom
data structure. This can result in a kernel crash.

Fix by re-factoring pca_reset() from a macro to a function handling chip
specific code, and only call adap->reset_chip() if the chip is not PCA9665.

Signed-off-by: Thomas Kavanagh <tkavanagh@juniper.net>
Signed-off-by: Guenter Roeck <groeck@juniper.net>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
---

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