Re: [PATCH v11 6/7] crypto: caam: cleanup CONFIG_64BIT ifdefs when using io{read|write}64

From: Logan Gunthorpe
Date: Tue Mar 06 2018 - 11:56:44 EST




On 06/03/18 05:37 AM, Horia Geantă wrote:
On 3/5/2018 9:08 PM, Logan Gunthorpe wrote:
Clean up the extra ifdefs which defined the wr_reg64 and rd_reg64
functions in non-64bit cases in favour of the new common
io-64-nonatomic-lo-hi header.

To be consistent with CAAM engine HW spec: in case of 64-bit registers,
irrespective of device endianness, the lower address should be read from
/ written to first, followed by the upper address. Indeed the I/O
accessors in CAAM driver currently don't follow the spec, however this
is a good opportunity to fix the code.

Signed-off-by: Logan Gunthorpe <logang@xxxxxxxxxxxx>
Cc: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Cc: Horia Geantă <horia.geanta@xxxxxxx>
Cc: Dan Douglass <dan.douglass@xxxxxxx>
Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Reviewed-by: Horia Geantă <horia.geanta@xxxxxxx>

Please get used to carrying Reviewed-bys from previous iterations when patches
stay the same:

Sorry, I usually do this but I must have missed the email. Thanks.

Logan