scsi: st: Use get_unaligned_be24() and sign_extend32()
Use these functions instead of open-coding them. Link: https://lore.kernel.org/r/20200313203102.16613-5-bvanassche@acm.org Cc: Kai Makisara <Kai.Makisara@kolumbus.fi> Cc: James E.J. Bottomley <jejb@linux.ibm.com> Cc: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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@ -45,6 +45,7 @@ static const char *verstr = "20160209";
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#include <linux/uaccess.h>
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#include <asm/dma.h>
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#include <asm/unaligned.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_dbg.h>
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@ -2680,8 +2681,7 @@ static void deb_space_print(struct scsi_tape *STp, int direction, char *units, u
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if (!debugging)
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return;
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sc = cmd[2] & 0x80 ? 0xff000000 : 0;
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sc |= (cmd[2] << 16) | (cmd[3] << 8) | cmd[4];
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sc = sign_extend32(get_unaligned_be24(&cmd[2]), 23);
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if (direction)
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sc = -sc;
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st_printk(ST_DEB_MSG, STp, "Spacing tape %s over %d %s.\n",
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