Messages in this thread | | | Date | Thu, 30 Dec 2004 09:54:48 +0000 | From | Russell King <> | Subject | Re: [PATCH] MMC block removable flag |
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On Thu, Dec 30, 2004 at 03:14:07AM +0100, Pierre Ossman wrote: > A MMC card is a highly removable device. This patch makes the block > layer part of the MMC layer set the removable flag.
I have this patch also floating around, but I've decided it isn't needed. I believe this flag is to indicate that we have removable media for a block device rather than to indicate that the block device can be removed.
However, when we insert and remove a MMC card, we create and destroy the block device itself. Therefore, as far as the block layer is concerned, the device itself is being inserted and removed, so telling the block layer that the media is removable is just silly - you can't separate the flash media from the on-board MMC controller.
(Note: any block device can be removed - you just rmmod the module supplying the block device driver, but this doesn't mean we mark all block devices with GENHD_FL_REMOVABLE.)
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 PCMCIA - http://pcmcia.arm.linux.org.uk/ 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.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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