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From: Pierre Ossman <drzeus-list@drzeus.cx>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Russell King <rmk+lkml@arm.linux.org.uk>
Subject: [PATCH 0/2] Proper MMC command classes support
Date: Wed, 18 May 2005 00:12:10 +0200	[thread overview]
Message-ID: <428A6C3A.40505@drzeus.cx> (raw)

The MMC block layer currently contains an if-clause which only seems to
serve the purpose of killing forward compatibility:

	if (card->csd.cmdclass & ~0x1ff)
		return -ENODEV;

This checks for (what I presume) command classes that were undefined
when this code was written. Since these are now starting to be used,
this code is causing a lot of problems. The following two patches tries
to make a more sane check of the command classes.

(Note. The new command class is for high speed cards to allow higher
transfer rates than normal)

Rgds
Pierre

             reply	other threads:[~2005-05-17 22:35 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-05-17 22:12 Pierre Ossman [this message]
2005-05-17 22:14 ` [PATCH 1/2] Proper MMC command classes support Pierre Ossman
2005-05-17 22:19 ` [PATCH 2/2] " Pierre Ossman

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