Revision 45686b6198bd824f083ff5293f191d78db9d708a authored by Christoph Hellwig on 02 March 2016, 17:07:12 UTC, committed by Jens Axboe on 03 March 2016, 21:43:10 UTC
The block layer uses an unsigned short for max_segments. The way we calculate the value for NVMe tends to generate very large 32-bit values, which after integer truncation may lead to a zero value instead of the desired outcome. Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Jeff Lien <Jeff.Lien@hgst.com> Tested-by: Jeff Lien <Jeff.Lien@hgst.com> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
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bcd.c
#include <linux/bcd.h>
#include <linux/export.h>
unsigned _bcd2bin(unsigned char val)
{
return (val & 0x0f) + (val >> 4) * 10;
}
EXPORT_SYMBOL(_bcd2bin);
unsigned char _bin2bcd(unsigned val)
{
return ((val / 10) << 4) + val % 10;
}
EXPORT_SYMBOL(_bin2bcd);
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