The patch titled
emu10k1: remove redundant memset
has been added to the -mm tree. Its filename is
emu10k1-remove-redundant-memset.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: emu10k1: remove redundant memset
From: Mariusz Kozlowski <m.kozlowski@xxxxxxxxxx>
This patch removes memset() from snd_emu10k1_fx8010_info() which apparently
isn't needed there. Upatched code uses:
memset(info, 0, sizeof(info));
where 'info' is a pointer and therefore only first 4 bytes of 'info' gets
cleared on a 32bit machine. Anyway looking at the code zeoring this memory
region isn't needed at all because the snd_emu10k1_fx8010_info() function
initializes all the 'info' fields on its own. So that's why this code works
at all in its original form.
This patch removes this redundant code. Also snd_emu10k1_fx8010_info() can't
fail so lets save some bytes and change its return type to void.
Signed-off-by: Mariusz Kozlowski <m.kozlowski@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
sound/pci/emu10k1/emufx.c | 9 ++-------
1 files changed, 2 insertions(+), 7 deletions(-)
diff -puN sound/pci/emu10k1/emufx.c~emu10k1-remove-redundant-memset sound/pci/emu10k1/emufx.c
--- a/sound/pci/emu10k1/emufx.c~emu10k1-remove-redundant-memset
+++ a/sound/pci/emu10k1/emufx.c
@@ -2440,14 +2440,13 @@ static void copy_string(char *dst, char
strcpy(dst, src);
}
-static int snd_emu10k1_fx8010_info(struct snd_emu10k1 *emu,
+static void snd_emu10k1_fx8010_info(struct snd_emu10k1 *emu,
struct snd_emu10k1_fx8010_info *info)
{
char **fxbus, **extin, **extout;
unsigned short fxbus_mask, extin_mask, extout_mask;
int res;
- memset(info, 0, sizeof(info));
info->internal_tram_size = emu->fx8010.itram_size;
info->external_tram_size = emu->fx8010.etram_pages.bytes / 2;
fxbus = fxbuses;
@@ -2464,7 +2463,6 @@ static int snd_emu10k1_fx8010_info(struc
for (res = 16; res < 32; res++, extout++)
copy_string(info->extout_names[res], extout_mask & (1 << res) ? *extout : NULL, "Unused", res);
info->gpr_controls = emu->fx8010.gpr_count;
- return 0;
}
static int snd_emu10k1_fx8010_ioctl(struct snd_hwdep * hw, struct file *file, unsigned int cmd, unsigned long arg)
@@ -2485,10 +2483,7 @@ static int snd_emu10k1_fx8010_ioctl(stru
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
- if ((res = snd_emu10k1_fx8010_info(emu, info)) < 0) {
- kfree(info);
- return res;
- }
+ snd_emu10k1_fx8010_info(emu, info);
if (copy_to_user(argp, info, sizeof(*info))) {
kfree(info);
return -EFAULT;
_
Patches currently in -mm which might be from m.kozlowski@xxxxxxxxxx are
fs-cifs-connectc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-md-dm-hw-handlerc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-md-dm-path-selectorc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-md-dm-tablec-kmalloc-memset-conversion-to-kzalloc.patch
drivers-md-dm-targetc-kmalloc-memset-conversion-to-kzalloc.patch
git-dvb.patch
drivers-input-serio-gscps2c-kmalloc-memset-conversion-to-kzalloc.patch
drivers-mmc-core-busc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-mmc-core-hostc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-mmc-core-mmc_opsc-kmalloc-memset-conversion-to-kzalloc.patch
git-mtd.patch
mtd-add-module-license-to-mtdbdi.patch
usb-remove-redundant-memset-from-amd5536udc.patch
drivers-net-wan-hdlc_frc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-net-irda-irda-usbc-mostly-kmalloc-memset-conversion-to-kalloc.patch
drivers-atm-iphasec-mostly-kmalloc-memset-conversion-to-kzalloc.patch
dont-optimise-away-baud-rate-changes-when-bother-is-used.patch
drivers-scsi-a4000tc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-scsi-bvme6000_scsic-kmalloc-memset-conversion-to-kzalloc.patch
drivers-scsi-gdthc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-scsi-lpfc-lpfc_debugfsc-kmalloc-memset-conversion-to-kcalloc.patch
drivers-scsi-lpfc-lpfc_initc-kmalloc-memset-conversion-to-kcalloc.patch
drivers-scsi-lpfc-lpfc_scsic-kmalloc-memset-conversion-to-kzalloc.patch
drivers-scsi-megaraidc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-scsi-dpt_i2oc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-message-fusion-mptctlc-mostly-kmalloc-memset-conversion-to-kzalloc.patch
drivers-block-ccissc-kmalloc-memset-conversion-to-kzalloc.patch
drivers-block-cpqarrayc-better-error-handling-and-kmalloc-memset-conversion-to-kalloc.patch
drivers-usb-misc-ftdi-elanc-kmalloc-memset-conversion-to-kzalloc.patch
arch-x86_64-kernel-io_apicc-kmalloc-memset-conversion-to-kzalloc.patch
include-asm-frv-thread_infoh-kmalloc-memset-conversion-to-kzalloc.patch
include-asm-m32r-thread_infoh-kmalloc-memset-conversion-to-kzalloc.patch
drivers-char-consolemapc-kmalloc-memset-conversion-to-kzalloc.patch
doc-firmware_sample_firmware_classc-kmalloc-memset-conversion-to-kzalloc.patch
fs-autofs4-inodec-kmalloc-memset-conversion-to-kzalloc.patch
drivers-char-ip2-ip2mainc-kmalloc-memset-conversion-to-kzalloc.patch
fs-jbd2-journalc-kmalloc-memset-conversion-to-kzalloc.patch
fs-reiser4-plugin-file-cryptcompressc-kmalloc-memset-conversion-to-kzalloc.patch
reiser4-kmalloc-memset-conversion-to-kzalloc.patch
fs-reiser4-init_superc-kmalloc-memset-conversion-to-kzalloc.patch
fs-reiser4-plugin-inode_ops_renamec-kmalloc-memset-conversion-to-kzalloc.patch
fs-reiser4-ktxnmgrdc-kmalloc-memset-conversion-to-kzalloc.patch
emu10k1-remove-redundant-memset.patch
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