Revision cd404af0c930104462aa91344f07d002cf8248ed authored by Michel Dänzer on 07 July 2015, 07:27:28 UTC, committed by Alex Deucher on 09 July 2015, 15:39:40 UTC
Take a GEM reference for and pin the new cursor BO, unpin and drop the GEM reference for the old cursor BO in radeon_crtc_cursor_set2, and use radeon_crtc->cursor_addr in radeon_set_cursor. This fixes radeon_cursor_reset accidentally incrementing the cursor BO pin count, and cleans up the code a little. Cc: stable@vger.kernel.org Reviewed-by: Grigori Goronzy <greg@chown.ath.cx> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 parent 866a920
lz4.c
/*
* Cryptographic API.
*
* Copyright (c) 2013 Chanho Min <chanho.min@lge.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/crypto.h>
#include <linux/vmalloc.h>
#include <linux/lz4.h>
struct lz4_ctx {
void *lz4_comp_mem;
};
static int lz4_init(struct crypto_tfm *tfm)
{
struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
ctx->lz4_comp_mem = vmalloc(LZ4_MEM_COMPRESS);
if (!ctx->lz4_comp_mem)
return -ENOMEM;
return 0;
}
static void lz4_exit(struct crypto_tfm *tfm)
{
struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
vfree(ctx->lz4_comp_mem);
}
static int lz4_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen)
{
struct lz4_ctx *ctx = crypto_tfm_ctx(tfm);
size_t tmp_len = *dlen;
int err;
err = lz4_compress(src, slen, dst, &tmp_len, ctx->lz4_comp_mem);
if (err < 0)
return -EINVAL;
*dlen = tmp_len;
return 0;
}
static int lz4_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen)
{
int err;
size_t tmp_len = *dlen;
size_t __slen = slen;
err = lz4_decompress_unknownoutputsize(src, __slen, dst, &tmp_len);
if (err < 0)
return -EINVAL;
*dlen = tmp_len;
return err;
}
static struct crypto_alg alg_lz4 = {
.cra_name = "lz4",
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
.cra_ctxsize = sizeof(struct lz4_ctx),
.cra_module = THIS_MODULE,
.cra_list = LIST_HEAD_INIT(alg_lz4.cra_list),
.cra_init = lz4_init,
.cra_exit = lz4_exit,
.cra_u = { .compress = {
.coa_compress = lz4_compress_crypto,
.coa_decompress = lz4_decompress_crypto } }
};
static int __init lz4_mod_init(void)
{
return crypto_register_alg(&alg_lz4);
}
static void __exit lz4_mod_fini(void)
{
crypto_unregister_alg(&alg_lz4);
}
module_init(lz4_mod_init);
module_exit(lz4_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZ4 Compression Algorithm");
MODULE_ALIAS_CRYPTO("lz4");
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