From: Michael Büsch <m@bues.ch>
Date: Sat, 5 Nov 2011 16:19:54 +0000 (+0100)
Subject: cbus-tahvo: Add tahvo_write_reg locking
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=634a2c49c894021c689241717fb81a118e611259;p=pandora-kernel.git

cbus-tahvo: Add tahvo_write_reg locking

tahvo_write_reg() needs to take the mutex to avoid a race
condition with tahvo_set_clear_reg_bits:

tahvo_set_clear_reg_bits():   |  tahvo_write_reg():
    __tahvo_read_reg()        |
                              |      __tahvo_write_reg() <-- race here
    __tahvo_write_reg()       |

Signed-off-by: Michael Buesch <m@bues.ch>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

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