From: Thomas Petazzoni Date: Mon, 5 May 2014 15:05:22 +0000 (+0200) Subject: ARM: mvebu: fix thermal quirk SoC revision check X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c1a01a0360f6744c9c1735e5db7b208df819156e;p=linux-beck.git ARM: mvebu: fix thermal quirk SoC revision check In commit 54fe26a900bc528f3df1e4235cb6b9ca5c6d4dc2 ('ARM: mvebu: Add thermal quirk for the Armada 375 DB board'), a check on the Armada SoC revision was added to decide whether a quirk for the thermal device should be applied or not. However, the quirk implementation has a bug: it assumes mvebu_get_soc_id() returns true on success, but it returns 0. Therefore, the condition: if (mvebu_get_soc_id(&dev, &rev) && rev > ARMADA_375_Z1_REV) is always false (as long as mvebu-soc-id is properly initialized). As a consequence, the quirk is always applied, even on A0 steppings, for which the quirk should not be applied. This was spotted by testing the thermal driver on Armada 375 A0, which Ezequiel could not do since he does not have access to the A0 revision of the SoC for the moment. Signed-off-by: Thomas Petazzoni Link: https://lkml.kernel.org/r/1399302326-6917-2-git-send-email-thomas.petazzoni@free-electrons.com Fixes: 54fe26a900bc528f3df1e4235cb6b9ca5c6d4dc2 ('ARM: mvebu: Add thermal quirk for the Armada 375 DB board') Acked-by: Ezequiel Garcia Signed-off-by: Jason Cooper --- diff --git a/arch/arm/mach-mvebu/board-v7.c b/arch/arm/mach-mvebu/board-v7.c index bc0283f0dd88..01cfce6ac20b 100644 --- a/arch/arm/mach-mvebu/board-v7.c +++ b/arch/arm/mach-mvebu/board-v7.c @@ -120,7 +120,7 @@ static void __init thermal_quirk(void) struct device_node *np; u32 dev, rev; - if (mvebu_get_soc_id(&dev, &rev) && rev > ARMADA_375_Z1_REV) + if (mvebu_get_soc_id(&dev, &rev) == 0 && rev > ARMADA_375_Z1_REV) return; for_each_compatible_node(np, NULL, "marvell,armada375-thermal") {