| Message ID | 20180810080526.27207-16-brgl@bgdev.pl (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | at24: remove at24_platform_data | expand |
Hi, I responded to the cover letter, but I'll put some notes here too. On Fri, Aug 10, 2018 at 10:05:12AM +0200, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski <bgolaszewski@baylibre.com> > > We want do add more sources from which to read the MAC address. In > order to avoid bloating this function too much, start by splitting it > into subroutines, each of which takes care of reading the MAC from > one source. > > Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> > --- > net/ethernet/eth.c | 44 ++++++++++++++++++++++++++++++++++++-------- > 1 file changed, 36 insertions(+), 8 deletions(-) > > diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c > index 7f08105402c8..d01dd55de037 100644 > --- a/net/ethernet/eth.c > +++ b/net/ethernet/eth.c > @@ -525,22 +525,50 @@ unsigned char * __weak arch_get_platform_mac_address(void) > return NULL; > } > > -int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr) > +static int mac_address_from_of(struct device *dev, u8 *mac_addr) > { > const unsigned char *addr; > - struct device_node *dp; > + struct device_node *np; > > - dp = dev->of_node; > - addr = NULL; > - if (dp) > - addr = of_get_mac_address(dp); > - if (!addr) > - addr = arch_get_platform_mac_address(); > + np = dev->of_node; > + if (!np) > + return -ENODEV; > > + addr = of_get_mac_address(np); > if (!addr) > return -ENODEV; > > + if (!addr || !is_valid_ether_addr(addr)) > + return -ENODEV; > + > ether_addr_copy(mac_addr, addr); > return 0; > } > + > +static int mac_address_from_arch(u8 *mac_addr) > +{ > + const unsigned char *addr; > + > + addr = arch_get_platform_mac_address(); > + if (!addr || !is_valid_ether_addr(addr)) > + return -ENODEV; > + > + ether_addr_copy(mac_addr, addr); > + return 0; > +} > + > +int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr) > +{ > + int rv; > + > + rv = mac_address_from_of(dev, mac_addr); This could just be replaced with device_get_mac_address(). Then you should be extending either fwnode_get_device_mac_address() or device_get_mac_addres() in the next patch, not eth_platform_get_mac_address(). Regards, Brian > + if (!rv) > + return 0; > + > + rv = mac_address_from_arch(mac_addr); > + if (!rv) > + return 0; > + > + return -ENODEV; > +} > EXPORT_SYMBOL(eth_platform_get_mac_address); > -- > 2.18.0 >
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c index 7f08105402c8..d01dd55de037 100644 --- a/net/ethernet/eth.c +++ b/net/ethernet/eth.c @@ -525,22 +525,50 @@ unsigned char * __weak arch_get_platform_mac_address(void) return NULL; } -int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr) +static int mac_address_from_of(struct device *dev, u8 *mac_addr) { const unsigned char *addr; - struct device_node *dp; + struct device_node *np; - dp = dev->of_node; - addr = NULL; - if (dp) - addr = of_get_mac_address(dp); - if (!addr) - addr = arch_get_platform_mac_address(); + np = dev->of_node; + if (!np) + return -ENODEV; + addr = of_get_mac_address(np); if (!addr) return -ENODEV; + if (!addr || !is_valid_ether_addr(addr)) + return -ENODEV; + ether_addr_copy(mac_addr, addr); return 0; } + +static int mac_address_from_arch(u8 *mac_addr) +{ + const unsigned char *addr; + + addr = arch_get_platform_mac_address(); + if (!addr || !is_valid_ether_addr(addr)) + return -ENODEV; + + ether_addr_copy(mac_addr, addr); + return 0; +} + +int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr) +{ + int rv; + + rv = mac_address_from_of(dev, mac_addr); + if (!rv) + return 0; + + rv = mac_address_from_arch(mac_addr); + if (!rv) + return 0; + + return -ENODEV; +} EXPORT_SYMBOL(eth_platform_get_mac_address);