From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from buzzloop.caiaq.de ([212.112.241.133]) by bombadil.infradead.org with esmtps (Exim 4.69 #1 (Red Hat Linux)) id 1MOysH-0002EC-W6 for linux-mtd@lists.infradead.org; Thu, 09 Jul 2009 19:01:51 +0000 Date: Thu, 9 Jul 2009 21:01:37 +0200 From: Daniel Mack To: linux-arm-kernel@lists.arm.linux.org.uk Subject: PXA3xx NAND driver trouble with 'conservative' CPU govenor Message-ID: <20090709190137.GW19257@buzzloop.caiaq.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Cc: linux-mtd@lists.infradead.org, Eric Miao List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , With the cpu govenor set to 'conservative', the PXA3xx NAND driver fails the tests from drivers/mtd/tests: sh-3.2# modprobe mtd_torturetest dev=3 [ 386.367730] [ 386.369296] ================================================= [ 386.375258] mtd_torturetest: Warning: this program is trying to wear out your flash, stop it if this is not wanted. [ 386.385811] mtd_torturetest: MTD device: 3 [ 386.390021] mtd_torturetest: torture 32 eraseblocks (8-39) of mtd3 [ 386.396238] mtd_torturetest: write verify enabled [ 388.675993] double bit error @ page 00000b79 [ 388.680406] timed out writing command [ 388.687925] mtd_torturetest: error -74 while reading EB 36, read 131072 [ 388.694536] mtd_torturetest: verify failed for 0xFF... pattern [ 388.700364] mtd_torturetest: finished after 0 erase cycles [ 388.705885] mtd_torturetest: error -74 occurred during torturing [ 388.711908] ================================================= modprobe: Failed to load module mtd_torturetest: Bad message. When setting the govenor to 'performance', the test passes. Has anyone seen similar issues? Any idea, anyone? Daniel