From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from exchange.solarflare.com ([216.237.3.220]) by bombadil.infradead.org with esmtp (Exim 4.69 #1 (Red Hat Linux)) id 1NUpsw-0001fg-8F for linux-mtd@lists.infradead.org; Tue, 12 Jan 2010 23:10:55 +0000 Subject: [PATCHv2 7/7] mtd: Raise limit on block device minor numbers From: Ben Hutchings To: David Woodhouse Content-Type: text/plain Date: Tue, 12 Jan 2010 23:10:46 +0000 Message-Id: <1263337846.3011.28.camel@achroite.uk.solarflarecom.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Cc: linux-net-drivers@solarflare.com, linux-mtd@lists.infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , add_mtd_blktrans_dev() imposes a maximum of 257 devices per block translator. This was presumably meant to prevent overflow back in the days of 8-bit minor numbers. Since we now have 20-bit minor numbers and can have more than 32 MTDs, change the maximum to MINORMASK. Signed-off-by: Ben Hutchings --- drivers/mtd/mtd_blkdevs.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/mtd/mtd_blkdevs.c b/drivers/mtd/mtd_blkdevs.c index 85a52b3..5e88b49 100644 --- a/drivers/mtd/mtd_blkdevs.c +++ b/drivers/mtd/mtd_blkdevs.c @@ -242,7 +242,7 @@ int add_mtd_blktrans_dev(struct mtd_blktrans_dev *new) if (new->devnum == -1) new->devnum = last_devnum+1; - if ((new->devnum << tr->part_bits) > 256) { + if ((new->devnum << tr->part_bits) > MINORMASK) { return -EBUSY; } -- 1.5.5 -- Ben Hutchings, Senior Software Engineer, Solarflare Communications Not speaking for my employer; that's the marketing department's job. They asked us to note that Solarflare product names are trademarked.