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Date: Tue, 20 Jan 2009 21:19:53 -0800 From: Greg Kroah-Hartman <gregkh@...e.de> To: linux-kernel@...r.kernel.org Cc: Roland Dreier <rdreier@...co.com>, Roland Dreier <rolandd@...co.com>, Greg Kroah-Hartman <gregkh@...e.de> Subject: [PATCH 1/5] driver core: Convert '/' to '!' in dev_set_name() From: Roland Dreier <rdreier@...co.com> Commit 3ada8b7e ("block: struct device - replace bus_id with dev_name(), dev_set_name()") deleted the code in register_disk() that changed a '/' to a '!' in the device name when registering a disk, but dev_set_name() does not perform this conversion. This leads to amusing problems with disks that have '/' in their names: for example a failure to boot with the root partition on a cciss device, even though the kernel says it knows about the root device: VFS: Cannot open root device "cciss/c0d0p6" or unknown-block(0,0) Please append a correct "root=" boot option; here are the available partitions: 6800 71652960 cciss/c0d0 driver: cciss 6802 1 cciss/c0d0p2 6805 2931831 cciss/c0d0p5 6806 34354908 cciss/c0d0p6 6810 71652960 cciss/c0d1 driver: cciss Fix this by adding code to change '/' to '!' in dev_set_name() to handle this until dev_set_name() is converted to use kobject_set_name(). Signed-off-by: Roland Dreier <rolandd@...co.com> Acked-by: Kay Sievers <kay.sievers@...y.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de> --- drivers/base/core.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index 8079afc..55e5309 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -777,10 +777,16 @@ static void device_remove_class_symlinks(struct device *dev) int dev_set_name(struct device *dev, const char *fmt, ...) { va_list vargs; + char *s; va_start(vargs, fmt); vsnprintf(dev->bus_id, sizeof(dev->bus_id), fmt, vargs); va_end(vargs); + + /* ewww... some of these buggers have / in the name... */ + while ((s = strchr(dev->bus_id, '/'))) + *s = '!'; + return 0; } EXPORT_SYMBOL_GPL(dev_set_name); -- 1.6.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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