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Date: Mon, 26 Oct 2015 18:44:48 -0700 From: Brian Norris <computersforpeace@...il.com> To: Michal Suchanek <hramrach@...il.com> Cc: Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>, Mark Rutland <mark.rutland@....com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Kumar Gala <galak@...eaurora.org>, David Woodhouse <dwmw2@...radead.org>, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org Subject: Re: [PATCH v3 2/5] mtd: mtdpart: Do not fail mtd probe when parsing partitions fails. On Sun, Oct 11, 2015 at 01:03:47PM -0700, Brian Norris wrote: > All in all, I think my suggestions would look something like the > following alternative patch. I haven't tested it yet. > > Brian > > (git-format-patch pasted below) > > From 53b60f31a2a0f2a7e8220a4aff47457248bccbcf Mon Sep 17 00:00:00 2001 > From: Brian Norris <computersforpeace@...il.com> > Date: Sun, 11 Oct 2015 10:25:23 -0700 > Subject: [PATCH] mtd: mtdpart: Do not fail mtd probe when parsing partitions > fails. > > Due to wrong assumption in ofpart ofpart fails on Exynos on SPI chips > with no partitions because the subnode containing controller data > confuses the ofpart parser. > > Thus compiling in ofpart support automatically fails probing any SPI NOR > flash without partitions on Exynos. > > Compiling in a partitioning scheme should not cause probe of otherwise > valid device to fail. > > Instead, let's do the following: > * try parsers until one succeeds > * if no parser succeeds, report the first error we saw > * even in the failure case, allow MTD to probe, with fallback > partitions or no partitions at all -- the master device will still be > registered > > Issue report and comments initially by Michal Suchanek. > > Reported-by: Michal Suchanek <hramrach@...il.com> > Signed-off-by: Brian Norris <computersforpeace@...il.com> > --- > drivers/mtd/mtdcore.c | 6 ++++-- > drivers/mtd/mtdpart.c | 14 ++++++++++---- > 2 files changed, 14 insertions(+), 6 deletions(-) Tested, and applied this version to l2-mtd.git -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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