> -----Original Message----- > From: linux-omap-owner@xxxxxxxxxxxxxxx [mailto:linux-omap-owner@xxxxxxxxxxxxxxx] On Behalf Of G, > Manjunath Kondaiah > Sent: Thursday, May 06, 2010 2:34 PM > To: Arce, Abraham; Tony Lindgren > Cc: linux-omap@xxxxxxxxxxxxxxx; spi-devel-general@xxxxxxxxxxxxxxxxxxxxx > Subject: RE: [PATCH v1 2/3] OMAP4: Ethernet: KS8851 Board Support > > > > > -----Original Message----- > > From: Arce, Abraham > > Sent: Thursday, May 06, 2010 9:49 AM > > To: G, Manjunath Kondaiah; Tony Lindgren > > Cc: linux-omap@xxxxxxxxxxxxxxx; > > spi-devel-general@xxxxxxxxxxxxxxxxxxxxx > > Subject: RE: [PATCH v1 2/3] OMAP4: Ethernet: KS8851 Board Support > > > > Manjunath, > > > > > > > > > > > + > > > > > > > > > +static void omap_ethernet_init(void) > > > > > > > > > +{ > > > > > > > > > + > > gpio_request(ETHERNET_KS8851_POWER_ENABLE, "ethernet"); > > > > > > > > > + > > gpio_direction_output(ETHERNET_KS8851_POWER_ENABLE, 1); > > > > > > > > > + gpio_request(ETHERNET_KS8851_QUART, "quart"); > > > > > > > > > + gpio_direction_output(ETHERNET_KS8851_QUART, 1); > > > > > > > > > + gpio_request(ETHERNET_KS8851_IRQ, "ks8851"); > > > > > > > > > > > > > > > > Any reason for not checking return value of > > gpio_request()? > > > > > > > > > > > > [snip] > > > > > Minor changes: > > > if (gpio_request(x)) > > > return status; > > > if (gpio_request(y)) > > > goto err1; > > > if (gpio_request(z)) > > > goto err2; > > > ... > > > return 0; > > > > > > err2: > > > free(y); > > > > > > err1: > > > free(x); > > > return status; > > > > How about this patch? > > > > Note. I am thinking in spi_register_board_info registration: > > > > 1. to be done if ethernet fails, other spi dev can be added in future > > No use. Since, for a given board SPI chip select lines are physically > connected to external slave devices, you can't register another SPI > slave device for same chip select. Be careful here Manju. There are 4 channels per SPI controller with 4 chip selects. You can add more devices on same controller > > > 2. not to be done if ethernet fails, no other dev in spi bus 1 for now > > > > What is the best approach? Is it to keep #2? > > Seems to be ok for chip select #0. If we have another device on bus 1 with > different chip select number, then registration should succeed. However, this > may not be the case with omap4 sdp board since it might have only one spi > device on bus1. There is a quad-uart on SPI but not being used though. > > -Manjunath-- > To unsubscribe from this list: send the line "unsubscribe linux-omap" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
