s3c2440-nand-shift-not-div.patch
The divisions of the signed access lengths caused GCC to emit
unnecessary code for handling negative values.
Changing them to shifts saves 24 bytes.
Signed-off-by: Werner Almesberger <[EMAIL PROTECTED]>
---
Index: ktrack/drivers/mtd/nand/s3c2410.c
===================================================================
--- ktrack.orig/drivers/mtd/nand/s3c2410.c 2008-11-03 12:55:53.000000000
-0200
+++ ktrack/drivers/mtd/nand/s3c2410.c 2008-11-03 12:58:18.000000000 -0200
@@ -530,7 +530,7 @@
static void s3c2440_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len)
{
struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
- readsl(info->regs + S3C2440_NFDATA, buf, len / 4);
+ readsl(info->regs + S3C2440_NFDATA, buf, len >> 2);
}
static void s3c2410_nand_write_buf(struct mtd_info *mtd, const u_char *buf,
int len)
@@ -542,7 +542,7 @@
static void s3c2440_nand_write_buf(struct mtd_info *mtd, const u_char *buf,
int len)
{
struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
- writesl(info->regs + S3C2440_NFDATA, buf, len / 4);
+ writesl(info->regs + S3C2440_NFDATA, buf, len >> 2);
}
/* cpufreq driver support */
