Revision 5ee88057889bbca5f5bb96031b62b3756b33e164 authored by Linus Torvalds on 15 January 2021, 04:10:06 UTC, committed by Linus Torvalds on 15 January 2021, 04:10:06 UTC
Pull drm fixes from Dave Airlie: "Regular fixes for rc4, a bunch of fixes across i915, amdgpu and nouveau here, along with a couple of TTM fixes, and dma-buf and one core pageflip/modifier interaction fix. One notable i915 fix is a HSW GT1 regression fix that has been outstanding for quite a while. (Thanks to Matt Turner for kicking Intel into getting it fixed). dma-buf: - Fix a memory leak in CMAV heap core: - Fix format check for legacy pageflips ttm: - Pass correct address to dma_mapping_error() - Use mutex in pool shrinker i915: - Allow the sysadmin to override security mitigations - Restore clear-residual mitigations for ivb/byt - Limit VFE threads based on GT - GVT: fix vfio edid and full display detection - Fix DSI DSC power refcounting - Fix LPT CPU mode backlight takeover - Disable RPM wakeref assertions during driver shutdown - Fix DSI sequence sleeps amdgpu: - Update repo location in MAINTAINERS - Add some new renoir PCI IDs - Revert CRC UAPI changes - Revert OLED display fix which cases clocking problems for some systems - Misc vangogh fixes - GFX fix for sienna cichlid - DCN1.0 fix for pipe split - Fix incorrect PSP command amdkfd: - Fix possible out of bounds read in vcrat creation nouveau: - irq handling fix - expansion ROM fix - hw init dpcd disable - aux semaphore owner field fix - vram heap sizing fix - notifier at 0 is valid fix" * tag 'drm-fixes-2021-01-15' of git://anongit.freedesktop.org/drm/drm: (37 commits) drm/nouveau/kms/nv50-: fix case where notifier buffer is at offset 0 drm/nouveau/mmu: fix vram heap sizing drm/nouveau/i2c/gm200: increase width of aux semaphore owner fields drm/nouveau/i2c/gk110-: disable hw-initiated dpcd reads drm/nouveau/i2c/gk110: split out from i2c/gk104 drm/nouveau/privring: ack interrupts the same way as RM drm/nouveau/bios: fix issue shadowing expansion ROMs drm/amd/display: Fix to be able to stop crc calculation Revert "drm/amd/display: Expose new CRC window property" Revert "drm/amdgpu/disply: fix documentation warnings in display manager" Revert "drm/amd/display: Fix unused variable warning" drm/amdgpu: set power brake sequence drm/amdgpu: add new device id for Renior drm/amdgpu: add green_sardine device id (v2) drm/amdgpu: fix vram type and bandwidth error for DDR5 and DDR4 drm/amdgpu/gfx10: add updated GOLDEN_TSC_COUNT_UPPER/LOWER register offsets for VGH drm/amdkfd: Fix out-of-bounds read in kdf_create_vcrat_image_cpu() Revert "drm/amd/display: Fixed Intermittent blue screen on OLED panel" drm/amd/display: disable dcn10 pipe split by default drm/amd/display: Add a missing DCN3.01 API mapping ...
lz4hc.c
// SPDX-License-Identifier: GPL-2.0-only
/*
* Cryptographic API.
*
* Copyright (c) 2013 Chanho Min <chanho.min@lge.com>
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/crypto.h>
#include <linux/vmalloc.h>
#include <linux/lz4.h>
#include <crypto/internal/scompress.h>
struct lz4hc_ctx {
void *lz4hc_comp_mem;
};
static void *lz4hc_alloc_ctx(struct crypto_scomp *tfm)
{
void *ctx;
ctx = vmalloc(LZ4HC_MEM_COMPRESS);
if (!ctx)
return ERR_PTR(-ENOMEM);
return ctx;
}
static int lz4hc_init(struct crypto_tfm *tfm)
{
struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
ctx->lz4hc_comp_mem = lz4hc_alloc_ctx(NULL);
if (IS_ERR(ctx->lz4hc_comp_mem))
return -ENOMEM;
return 0;
}
static void lz4hc_free_ctx(struct crypto_scomp *tfm, void *ctx)
{
vfree(ctx);
}
static void lz4hc_exit(struct crypto_tfm *tfm)
{
struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
lz4hc_free_ctx(NULL, ctx->lz4hc_comp_mem);
}
static int __lz4hc_compress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
int out_len = LZ4_compress_HC(src, dst, slen,
*dlen, LZ4HC_DEFAULT_CLEVEL, ctx);
if (!out_len)
return -EINVAL;
*dlen = out_len;
return 0;
}
static int lz4hc_scompress(struct crypto_scomp *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen,
void *ctx)
{
return __lz4hc_compress_crypto(src, slen, dst, dlen, ctx);
}
static int lz4hc_compress_crypto(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst,
unsigned int *dlen)
{
struct lz4hc_ctx *ctx = crypto_tfm_ctx(tfm);
return __lz4hc_compress_crypto(src, slen, dst, dlen,
ctx->lz4hc_comp_mem);
}
static int __lz4hc_decompress_crypto(const u8 *src, unsigned int slen,
u8 *dst, unsigned int *dlen, void *ctx)
{
int out_len = LZ4_decompress_safe(src, dst, slen, *dlen);
if (out_len < 0)
return -EINVAL;
*dlen = out_len;
return 0;
}
static int lz4hc_sdecompress(struct crypto_scomp *tfm, const u8 *src,
unsigned int slen, u8 *dst, unsigned int *dlen,
void *ctx)
{
return __lz4hc_decompress_crypto(src, slen, dst, dlen, NULL);
}
static int lz4hc_decompress_crypto(struct crypto_tfm *tfm, const u8 *src,
unsigned int slen, u8 *dst,
unsigned int *dlen)
{
return __lz4hc_decompress_crypto(src, slen, dst, dlen, NULL);
}
static struct crypto_alg alg_lz4hc = {
.cra_name = "lz4hc",
.cra_driver_name = "lz4hc-generic",
.cra_flags = CRYPTO_ALG_TYPE_COMPRESS,
.cra_ctxsize = sizeof(struct lz4hc_ctx),
.cra_module = THIS_MODULE,
.cra_init = lz4hc_init,
.cra_exit = lz4hc_exit,
.cra_u = { .compress = {
.coa_compress = lz4hc_compress_crypto,
.coa_decompress = lz4hc_decompress_crypto } }
};
static struct scomp_alg scomp = {
.alloc_ctx = lz4hc_alloc_ctx,
.free_ctx = lz4hc_free_ctx,
.compress = lz4hc_scompress,
.decompress = lz4hc_sdecompress,
.base = {
.cra_name = "lz4hc",
.cra_driver_name = "lz4hc-scomp",
.cra_module = THIS_MODULE,
}
};
static int __init lz4hc_mod_init(void)
{
int ret;
ret = crypto_register_alg(&alg_lz4hc);
if (ret)
return ret;
ret = crypto_register_scomp(&scomp);
if (ret) {
crypto_unregister_alg(&alg_lz4hc);
return ret;
}
return ret;
}
static void __exit lz4hc_mod_fini(void)
{
crypto_unregister_alg(&alg_lz4hc);
crypto_unregister_scomp(&scomp);
}
subsys_initcall(lz4hc_mod_init);
module_exit(lz4hc_mod_fini);
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("LZ4HC Compression Algorithm");
MODULE_ALIAS_CRYPTO("lz4hc");
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