linux.git/drivers/crypto/sunxi-ss, branch v4.8

crypto: sun4i-ss - Replace spinlock_bh by spin_lock_irq{save|restore}

2016-04-05T12:35:53+00:00

The current sun4i-ss driver could generate data corruption when ciphering/deciphering.
It occurs randomly on end of handled data.
No root cause have been found and the only way to remove it is to replace
all spin_lock_bh by their irq counterparts.

Fixes: 6298e948215f ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Signed-off-by: LABBE Corentin 
Cc: stable 
Signed-off-by: Herbert Xu

crypto: sunxi - don't print confusing data

2016-01-27T12:36:26+00:00

gcc correctly warns that the printk output contains a variable that
it thinks is not initialized in some cases:

drivers/crypto/sunxi-ss/sun4i-ss-cipher.c: In function 'sun4i_ss_cipher_poll':
drivers/crypto/sunxi-ss/sun4i-ss-cipher.c:254:76: warning: 'todo' may be used uninitialized in this function [-Wmaybe-uninitialized]
drivers/crypto/sunxi-ss/sun4i-ss-cipher.c:144:15: note: 'todo' was declared here

A closer look at the function reveals that the variable is always
initialized at this point (ileft is guaranteed to be positive at the
start), but its contents are not well-defined:
Depending on some other variables, it might be either a count in
words or bytes, and it could refer to either input or output.

The easiest solution apparently is to remove the confusing output
and let the reader figure out the state from the other variables.

Signed-off-by: Arnd Bergmann 
Signed-off-by: Herbert Xu

crypto: sun4i-ss - add missing statesize

2015-11-17T14:00:42+00:00

sun4i-ss implementaton of md5/sha1 is via ahash algorithms.
Commit 8996eafdcbad ("crypto: ahash - ensure statesize is non-zero")
made impossible to load them without giving statesize. This patch
specifiy statesize for sha1 and md5.

Fixes: 6298e948215f ("crypto: sunxi-ss - Add Allwinner Security System crypto accelerator")
Cc:  # v4.3+
Tested-by: Chen-Yu Tsai 
Signed-off-by: LABBE Corentin 
Signed-off-by: Herbert Xu

crypto: sunxi-ss - Fix a possible driver hang with ciphers

2015-09-10T09:22:55+00:00

The sun4i_ss_opti_poll function cipher data until the output miter have
a length of 0.
If the crypto API client, give more SGs than necessary this could result
in an infinite loop.
Fix it by checking for remaining bytes, just like sun4i_ss_cipher_poll().

Signed-off-by: LABBE Corentin 
Signed-off-by: Herbert Xu

crypto: sunxi-ss - Add optional reset control support

2015-08-13T07:13:23+00:00

On sun6i and later platforms, the reset control is split out of the
clock gates. Add support for an optional reset control.

Signed-off-by: Chen-Yu Tsai 
Signed-off-by: Herbert Xu

crypto: sunxi-ss - Add Allwinner Security System crypto accelerator

2015-07-20T07:54:08+00:00

Add support for the Security System included in Allwinner SoC A20.
The Security System is a hardware cryptographic accelerator that support:
- MD5 and SHA1 hash algorithms
- AES block cipher in CBC/ECB mode with 128/196/256bits keys.
- DES and 3DES block cipher in CBC/ECB mode

Signed-off-by: LABBE Corentin 
Signed-off-by: Herbert Xu