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Staging: echo: fix kmalloc()/kfree() uses 

This patch removes the malloc()/free() macro wrappers and converts
call-sites to use kcalloc() and kzalloc() where appropriate. I also
fixed up out-of-memory error handling in couple of places where it was
broken.

Cc: David Rowe <david@rowetel.com>
Cc: Steve Underwood <steveu@coppice.org>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Pekka Enberg 2008-10-17 20:55:03 +03:00 committed by Greg Kroah-Hartman
parent f55ccbf6bc
commit db2af149bd
2 changed files with 22 additions and 28 deletions
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36
drivers/staging/echo/echo.c
View File

@ -109,8 +109,6 @@
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#define malloc(a) kmalloc((a), GFP_KERNEL)
#define free(a) kfree(a)
#include "bit_operations.h"
#include "echo.h"
@ -238,27 +236,19 @@ struct oslec_state *oslec_create(int len, int adaption_mode)
{
struct oslec_state *ec;
int i;
int j;
ec = kmalloc(sizeof(*ec), GFP_KERNEL);
if (ec == NULL)
return NULL;
memset(ec, 0, sizeof(*ec));
ec = kzalloc(sizeof(*ec), GFP_KERNEL);
if (!ec)
return NULL;
ec->taps = len;
ec->log2taps = top_bit(len);
ec->curr_pos = ec->taps - 1;
for (i = 0; i < 2; i++)
{
if ((ec->fir_taps16[i] = (int16_t *) malloc((ec->taps)*sizeof(int16_t))) == NULL)
{
for (j = 0; j < i; j++)
kfree(ec->fir_taps16[j]);
kfree(ec);
return NULL;
}
memset(ec->fir_taps16[i], 0, (ec->taps)*sizeof(int16_t));
for (i = 0; i < 2; i++) {
ec->fir_taps16[i] = kcalloc(ec->taps, sizeof(int16_t), GFP_KERNEL);
if (!ec->fir_taps16[i])
goto error_oom;
}
fir16_create(&ec->fir_state,
@ -275,8 +265,9 @@ struct oslec_state *oslec_create(int len, int adaption_mode)
ec->cng_level = 1000;
oslec_adaption_mode(ec, adaption_mode);
ec->snapshot = (int16_t*)malloc(ec->taps*sizeof(int16_t));
memset(ec->snapshot, 0, sizeof(int16_t)*ec->taps);
ec->snapshot = kcalloc(ec->taps, sizeof(int16_t), GFP_KERNEL);
if (!ec->snapshot)
goto error_oom;
ec->cond_met = 0;
ec->Pstates = 0;
@ -288,6 +279,13 @@ struct oslec_state *oslec_create(int len, int adaption_mode)
ec->Lbgn_upper_acc = ec->Lbgn_upper << 13;
return ec;
error_oom:
for (i = 0; i < 2; i++)
kfree(ec->fir_taps16[i]);
kfree(ec);
return NULL;
}
EXPORT_SYMBOL_GPL(oslec_create);
/*- End of function --------------------------------------------------------*/

14
drivers/staging/echo/fir.h
View File

@ -117,11 +117,9 @@ static __inline__ const int16_t *fir16_create(fir16_state_t *fir,
fir->curr_pos = taps - 1;
fir->coeffs = coeffs;
#if defined(USE_MMX) || defined(USE_SSE2) || defined(__bfin__)
if ((fir->history = malloc(2*taps*sizeof(int16_t))))
memset(fir->history, 0, 2*taps*sizeof(int16_t));
fir->history = kcalloc(2*taps, sizeof(int16_t), GFP_KERNEL);
#else
if ((fir->history = (int16_t *) malloc(taps*sizeof(int16_t))))
memset(fir->history, 0, taps*sizeof(int16_t));
fir->history = kcalloc(taps, sizeof(int16_t), GFP_KERNEL);
#endif
return fir->history;
}
@ -139,7 +137,7 @@ static __inline__ void fir16_flush(fir16_state_t *fir)
static __inline__ void fir16_free(fir16_state_t *fir)
{
free(fir->history);
kfree(fir->history);
}
/*- End of function --------------------------------------------------------*/
@ -275,9 +273,7 @@ static __inline__ const int16_t *fir32_create(fir32_state_t *fir,
fir->taps = taps;
fir->curr_pos = taps - 1;
fir->coeffs = coeffs;
fir->history = (int16_t *) malloc(taps*sizeof(int16_t));
if (fir->history)
memset(fir->history, '\0', taps*sizeof(int16_t));
fir->history = kcalloc(taps, sizeof(int16_t), GFP_KERNEL);
return fir->history;
}
/*- End of function --------------------------------------------------------*/
@ -290,7 +286,7 @@ static __inline__ void fir32_flush(fir32_state_t *fir)
static __inline__ void fir32_free(fir32_state_t *fir)
{
free(fir->history);
kfree(fir->history);
}
/*- End of function --------------------------------------------------------*/