From mboxrd@z Thu Jan 1 00:00:00 1970 From: wsa@the-dreams.de (Wolfram Sang) Date: Fri, 23 Sep 2016 14:12:45 +0200 Subject: [PATCH] i2c: uniphier-f: fix misdetection of incomplete STOP condition In-Reply-To: <1474632241-10440-1-git-send-email-yamada.masahiro@socionext.com> References: <1474632241-10440-1-git-send-email-yamada.masahiro@socionext.com> Message-ID: <20160923121245.GA1580@katana> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Sep 23, 2016 at 09:04:01PM +0900, Masahiro Yamada wrote: > Currently, the status register FI2C_SR is checked immediately after > a STOP condition is issued in case of the deferred STOP condition. > It takes typically 5-10 usec until the corresponding bits in the > register are set, so the error check for "stop condition was not > completed" is very likely to be false positive. > > Add wait code to relax the status register check. > > Signed-off-by: Masahiro Yamada Use readl_poll_timeout? -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: not available URL: