fat: Add printf attribute to fat_fs_panic()

[linux-2.6-omap-h63xx.git] / drivers / crypto / padlock-aes.c

diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 54a2a166e566740f1ebae141495e09013015aeea..bf2917d197a018d13f1bc48ad4c93c0b0a93ccde 100644 (file)
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -16,6 +16,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <asm/byteorder.h>
+#include <asm/i387.h>
 #include "padlock.h"
 
 /* Control word. */
@@ -141,6 +142,12 @@ static inline void padlock_reset_key(void)
        asm volatile ("pushfl; popfl");
 }
 
+/*
+ * While the padlock instructions don't use FP/SSE registers, they
+ * generate a spurious DNA fault when cr0.ts is '1'. These instructions
+ * should be used only inside the irq_ts_save/restore() context
+ */
+
 static inline void padlock_xcrypt(const u8 *input, u8 *output, void *key,
                                  void *control_word)
 {
@@ -205,15 +212,23 @@ static inline u8 *padlock_xcrypt_cbc(const u8 *input, u8 *output, void *key,
 static void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
        struct aes_ctx *ctx = aes_ctx(tfm);
+       int ts_state;
        padlock_reset_key();
+
+       ts_state = irq_ts_save();
        aes_crypt(in, out, ctx->E, &ctx->cword.encrypt);
+       irq_ts_restore(ts_state);
 }
 
 static void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
        struct aes_ctx *ctx = aes_ctx(tfm);
+       int ts_state;
        padlock_reset_key();
+
+       ts_state = irq_ts_save();
        aes_crypt(in, out, ctx->D, &ctx->cword.decrypt);
+       irq_ts_restore(ts_state);
 }
 
 static struct crypto_alg aes_alg = {
@@ -244,12 +259,14 @@ static int ecb_aes_encrypt(struct blkcipher_desc *desc,
        struct aes_ctx *ctx = blk_aes_ctx(desc->tfm);
        struct blkcipher_walk walk;
        int err;
+       int ts_state;
 
        padlock_reset_key();
 
        blkcipher_walk_init(&walk, dst, src, nbytes);
        err = blkcipher_walk_virt(desc, &walk);
 
+       ts_state = irq_ts_save();
        while ((nbytes = walk.nbytes)) {
                padlock_xcrypt_ecb(walk.src.virt.addr, walk.dst.virt.addr,
                                   ctx->E, &ctx->cword.encrypt,
@@ -257,6 +274,7 @@ static int ecb_aes_encrypt(struct blkcipher_desc *desc,
                nbytes &= AES_BLOCK_SIZE - 1;
                err = blkcipher_walk_done(desc, &walk, nbytes);
        }
+       irq_ts_restore(ts_state);
 
        return err;
 }
@@ -268,12 +286,14 @@ static int ecb_aes_decrypt(struct blkcipher_desc *desc,
        struct aes_ctx *ctx = blk_aes_ctx(desc->tfm);
        struct blkcipher_walk walk;
        int err;
+       int ts_state;
 
        padlock_reset_key();
 
        blkcipher_walk_init(&walk, dst, src, nbytes);
        err = blkcipher_walk_virt(desc, &walk);
 
+       ts_state = irq_ts_save();
        while ((nbytes = walk.nbytes)) {
                padlock_xcrypt_ecb(walk.src.virt.addr, walk.dst.virt.addr,
                                   ctx->D, &ctx->cword.decrypt,
@@ -281,7 +301,7 @@ static int ecb_aes_decrypt(struct blkcipher_desc *desc,
                nbytes &= AES_BLOCK_SIZE - 1;
                err = blkcipher_walk_done(desc, &walk, nbytes);
        }
-
+       irq_ts_restore(ts_state);
        return err;
 }
 
@@ -314,12 +334,14 @@ static int cbc_aes_encrypt(struct blkcipher_desc *desc,
        struct aes_ctx *ctx = blk_aes_ctx(desc->tfm);
        struct blkcipher_walk walk;
        int err;
+       int ts_state;
 
        padlock_reset_key();
 
        blkcipher_walk_init(&walk, dst, src, nbytes);
        err = blkcipher_walk_virt(desc, &walk);
 
+       ts_state = irq_ts_save();
        while ((nbytes = walk.nbytes)) {
                u8 *iv = padlock_xcrypt_cbc(walk.src.virt.addr,
                                            walk.dst.virt.addr, ctx->E,
@@ -329,6 +351,7 @@ static int cbc_aes_encrypt(struct blkcipher_desc *desc,
                nbytes &= AES_BLOCK_SIZE - 1;
                err = blkcipher_walk_done(desc, &walk, nbytes);
        }
+       irq_ts_restore(ts_state);
 
        return err;
 }
@@ -340,12 +363,14 @@ static int cbc_aes_decrypt(struct blkcipher_desc *desc,
        struct aes_ctx *ctx = blk_aes_ctx(desc->tfm);
        struct blkcipher_walk walk;
        int err;
+       int ts_state;
 
        padlock_reset_key();
 
        blkcipher_walk_init(&walk, dst, src, nbytes);
        err = blkcipher_walk_virt(desc, &walk);
 
+       ts_state = irq_ts_save();
        while ((nbytes = walk.nbytes)) {
                padlock_xcrypt_cbc(walk.src.virt.addr, walk.dst.virt.addr,
                                   ctx->D, walk.iv, &ctx->cword.decrypt,
@@ -354,6 +379,7 @@ static int cbc_aes_decrypt(struct blkcipher_desc *desc,
                err = blkcipher_walk_done(desc, &walk, nbytes);
        }
 
+       irq_ts_restore(ts_state);
        return err;
 }