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drivers: can: npl: ensure CANFD_FDF flag is defined

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Linux kernels before v5.14 do not define the CANFD_FDF flag. The flag is
disregarded within the Linux kernel. It is just there for being able to
reuse the canfd_frame struct for classic CAN frames in Linux user-space
applications.

Define the CANFD_FDF flag locally if not already defined to allow compiling
against older Linux kernel headers.

See the following Linux kernel commit for further details:
02546884221279da2725e87e35348290470363d7

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
This commit is contained in:
Henrik Brix Andersen 2022-10-17 12:56:59 +02:00 • committed by Carles Cufí
commit 5f8983f2ec
1 changed files with 5 additions and 0 deletions
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5
drivers/can/can_native_posix_linux_socketcan.c
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@ -35,6 +35,11 @@
#include "can_native_posix_linux_socketcan.h"
#ifndef CANFD_FDF
/* Linux kernels before v5.14 do not define CANFD_FDF */
#define CANFD_FDF 0x04
#endif /* CANFD_FDF */
int linux_socketcan_iface_open(const char *if_name)
{
struct sockaddr_can addr;