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NFC: st21nfcb: Retry i2c_master_send if it returns a negative value
authorChristophe Ricard <christophe.ricard@gmail.com>
Tue, 31 Mar 2015 06:02:15 +0000 (08:02 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 6 May 2015 20:01:53 +0000 (22:01 +0200)
commitc57394c58bafec25208cdaefb721a73cf1ea4d54
treef70f51955349799cbb9e44c8c2dc7608ea9daf89tree | snapshot
parent31064e86b01887a28fa26af528dc5239be384435commit | diff
NFC: st21nfcb: Retry i2c_master_send if it returns a negative value

commit d4a41d10b2cb5890aeda6b2912973b2a754b05b1 upstream.

i2c_master_send may return many negative values different than
-EREMOTEIO.
In case an i2c transaction is NACK'ed, on raspberry pi B+
kernel 3.18, -EIO is generated instead.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/nfc/st21nfcb/i2c.c diff | blob | history
wrapfs-3.19.y