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can: c_can: prepare to up the message objects number

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As pointed by commit c0a9f4d396 ("can: c_can: Reduce register
access") the "driver casts the 16 message objects in stone, which is
completely braindead as contemporary hardware has up to 128 message
objects".

The patch prepares the module to extend the number of message objects
beyond the 32 currently managed. This was achieved by transforming the
constants used to manage RX/TX messages into variables without
changing the driver policy.

Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20210302215435.18286-6-dariobin@libero.it
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Dario Binacchi
2021-03-02 22:54:34 +01:00
committed by Marc Kleine-Budde
parent fcbded0198
commit 13831ce69c
4 changed files with 43 additions and 34 deletions
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2
drivers/net/can/c_can/c_can_platform.c
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@@ -294,7 +294,7 @@ static int c_can_plat_probe(struct platform_device *pdev)
}
/* allocate the c_can device */
dev = alloc_c_can_dev();
dev = alloc_c_can_dev(C_CAN_NO_OF_OBJECTS);
if (!dev) {
ret = -ENOMEM;
goto exit;