Commit dba1572c authored by Thomas Kopp's avatar Thomas Kopp Committed by Marc Kleine-Budde
Browse files

can: mcp25xxfd: narrow down wildcards in device tree bindings to "microchip,mcp251xfd" 

The wildcard should be narrowed down to prevent existing and future devices
that are not compatible from matching. It is very unlikely that incompatible
devices will be released that do not match the wildcard.

Discussion Reference: https://lore.kernel.org/r/CAMuHMdVkwGjr6dJuMyhQNqFoJqbh6Ec5V2b5LenCshwpM2SDsQ@mail.gmail.com



Reported-by: default avatarGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarThomas Kopp <thomas.kopp@microchip.com>
Link: https://lore.kernel.org/r/20200930091423.755-1-thomas.kopp@microchip.com


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 0e051294

drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c

+9 −9
Original line number Diff line number Diff line
@@ -41,10 +41,10 @@ static const struct mcp25xxfd_devtype_data mcp25xxfd_devtype_data_mcp2518fd = { 
};



/* Autodetect model, start with CRC enabled. */

static const struct mcp25xxfd_devtype_data mcp25xxfd_devtype_data_mcp25xxfd = {

static const struct mcp25xxfd_devtype_data mcp25xxfd_devtype_data_mcp251xfd = {

	.quirks = MCP25XXFD_QUIRK_CRC_REG | MCP25XXFD_QUIRK_CRC_RX |

		MCP25XXFD_QUIRK_CRC_TX | MCP25XXFD_QUIRK_ECC,

	.model = MCP25XXFD_MODEL_MCP25XXFD,

	.model = MCP25XXFD_MODEL_MCP251XFD,

};



static const struct can_bittiming_const mcp25xxfd_bittiming_const = {
@@ -78,8 +78,8 @@ static const char *__mcp25xxfd_get_model_str(enum mcp25xxfd_model model) 
		return "MCP2517FD"; break;

	case MCP25XXFD_MODEL_MCP2518FD:

		return "MCP2518FD"; break;

	case MCP25XXFD_MODEL_MCP25XXFD:

		return "MCP25xxFD"; break;

	case MCP25XXFD_MODEL_MCP251XFD:

		return "MCP251xFD"; break;

	}



	return "<unknown>";
@@ -2494,7 +2494,7 @@ static int mcp25xxfd_register_chip_detect(struct mcp25xxfd_priv *priv) 
	else

		devtype_data = &mcp25xxfd_devtype_data_mcp2517fd;



	if (!mcp25xxfd_is_25XX(priv) &&

	if (!mcp25xxfd_is_251X(priv) &&

	    priv->devtype_data.model != devtype_data->model) {

		netdev_info(ndev,

			    "Detected %s, but firmware specifies a %s. Fixing up.",
@@ -2703,8 +2703,8 @@ static const struct of_device_id mcp25xxfd_of_match[] = { 
		.compatible = "microchip,mcp2518fd",

		.data = &mcp25xxfd_devtype_data_mcp2518fd,

	}, {

		.compatible = "microchip,mcp25xxfd",

		.data = &mcp25xxfd_devtype_data_mcp25xxfd,

		.compatible = "microchip,mcp251xfd",

		.data = &mcp25xxfd_devtype_data_mcp251xfd,

	}, {

		/* sentinel */

	},
@@ -2719,8 +2719,8 @@ static const struct spi_device_id mcp25xxfd_id_table[] = { 
		.name = "mcp2518fd",

		.driver_data = (kernel_ulong_t)&mcp25xxfd_devtype_data_mcp2518fd,

	}, {

		.name = "mcp25xxfd",

		.driver_data = (kernel_ulong_t)&mcp25xxfd_devtype_data_mcp25xxfd,

		.name = "mcp251xfd",

		.driver_data = (kernel_ulong_t)&mcp25xxfd_devtype_data_mcp251xfd,

	}, {

		/* sentinel */

	},

drivers/net/can/spi/mcp25xxfd/mcp25xxfd.h

+2 −2
Original line number Diff line number Diff line
@@ -553,7 +553,7 @@ struct mcp25xxfd_regs_status { 
enum mcp25xxfd_model {

	MCP25XXFD_MODEL_MCP2517FD = 0x2517,

	MCP25XXFD_MODEL_MCP2518FD = 0x2518,

	MCP25XXFD_MODEL_MCP25XXFD = 0xffff,	/* autodetect model */

	MCP25XXFD_MODEL_MCP251XFD = 0xffff,	/* autodetect model */

};



struct mcp25xxfd_devtype_data {
@@ -607,7 +607,7 @@ mcp25xxfd_is_##_model(const struct mcp25xxfd_priv *priv) \ 


MCP25XXFD_IS(2517);

MCP25XXFD_IS(2518);

MCP25XXFD_IS(25XX);

MCP25XXFD_IS(251X);



static inline u8 mcp25xxfd_first_byte_set(u32 mask)

{