From mboxrd@z Thu Jan 1 00:00:00 1970 From: w.sang@pengutronix.de (Wolfram Sang) Date: Tue, 27 Mar 2012 11:01:49 +0200 Subject: [MX25][MMC] mmc esdhc failure in 3.3 In-Reply-To: References: <5e57eb999780335721212bb8d411406f@mail.fqingenieria.es> <20120312132423.GC2459@pengutronix.de> <9018463dfcd3c9e9a311aeed42b758bf@mail.fqingenieria.es> <0E83723C55F66F43A6041464FE31119D099A34@039-SN2MPN1-011.039d.mgd.msft.net> <85b807b77d73328485781d6fa1568e46@mail.fqingenieria.es> <20120327101259.73525f9d@eb-e6520> Message-ID: <20120327090148.GB6790@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org > >does that attached patch fix your problem ? > > YES, indeed it does to a certain degree. The timeout errors do not > occur anymore and I can successfully perform many fs->ops, such as Interesting question is now why it worked on your older kernel? The code around BROKEN_TIMEOUT is there for much longer, I'd think. > The speed of the card is excruciatingly slow, however. We roughly > get between 34KB/s and 64KB/s from a dd if=/dev/zero write to any of > the following partitions: Check the code below what is patched. That's currently the best solution for the errata. There might be better ones, though, but you'd need to find out. Regards, Wolfram -- Pengutronix e.K. | Wolfram Sang | Industrial Linux Solutions | http://www.pengutronix.de/ | -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 198 bytes Desc: Digital signature URL: