From mboxrd@z Thu Jan 1 00:00:00 1970 From: Simon Glass Date: Mon, 11 Apr 2016 06:00:51 -0600 Subject: [U-Boot] [PATCH] lib/crc8: Add crc start value In-Reply-To: <1460123789-6474-1-git-send-email-sr@denx.de> References: <1460123789-6474-1-git-send-email-sr@denx.de> Message-ID: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 8 April 2016 at 07:56, Stefan Roese wrote: > > To make the usage of this function more flexible, lets add the CRC start > value as parameter to this function. This way it can be used by other > functions requiring different start values than 0 as well. > > For non-zero CRC start values to work, I've reworked the function a bit. > The new implementation is copied from the Linux version in > drivers/i2c/i2c-core.c / i2c_smbus_pec(). Which supports non-zero > CRC stating values. > > I've double-checked that the results for zero starting values are > identical to the results from the original version of this function. > > Signed-off-by: Stefan Roese > Cc: Simon Glass > --- > drivers/tpm/tpm_tis_sandbox.c | 2 +- > include/linux/crc8.h | 3 ++- > lib/crc8.c | 33 ++++++++++++++++++++------------- > 3 files changed, 23 insertions(+), 15 deletions(-) Reviewed-by: Simon Glass