From: Geert Uytterhoeven Date: Mon, 17 Nov 2014 11:43:00 +0000 (+0100) Subject: i2c: core: Fix probing of i2c slaves without interrupts X-Git-Tag: omap-for-v3.20/drop-legacy-3517~88^2~31 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f34be7400c68d3f761ceca405edabb94ccfcd03;p=pandora-kernel.git i2c: core: Fix probing of i2c slaves without interrupts Since commit 2fd36c55264926e2 ("i2c: core: Map OF IRQ at probe time"), i2c slaves without interrupts (e.g. da9210 and at24 on r8a7791/koelsch) fail to probe: at24: probe of 2-0050 failed with error -22 da9210: probe of 6-0068 failed with error -22 This happens because the call to of_irq_get() in i2c_device_probe() returns -EINVAL. If a device node does not have an "interrupts" property, of_irq_parse_one() fails. Unlike irq_of_parse_and_map(), of_irq_get() does not ignore errors from of_irq_parse_one(), but forwards them. Make i2c_device_probe() ignore all errors but -EPROBE_DEFER to fix this, just like platform_get_irq() and platform_get_irq_byname() already do. Fixes: 2fd36c55264926e2 ("i2c: core: Map OF IRQ at probe time") Signed-off-by: Geert Uytterhoeven Tested-by: Fabio Estevam Signed-off-by: Wolfram Sang --- Reading git-diff-tree failed