On Tue, Jan 19, 2010 at 09:02:36AM -0500, Jean-Hugues Deschenes wrote: > Designware component type register is checked before attaching to the device. > > Signed-off-by: Jean-Hugues Deschenes <jean-hugues.deschenes@xxxxxxxxxxx> > > --- > drivers/i2c/busses/i2c-designware.c | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > Index: linux-2.6_i2c/drivers/i2c/busses/i2c-designware.c > =================================================================== > --- linux-2.6_i2c.orig/drivers/i2c/busses/i2c-designware.c > +++ linux-2.6_i2c/drivers/i2c/busses/i2c-designware.c > @@ -68,6 +68,7 @@ > #define DW_IC_TXFLR 0x74 > #define DW_IC_RXFLR 0x78 > #define DW_IC_COMP_PARAM_1 0xf4 > +#define DW_IC_COMP_TYPE 0xfc > #define DW_IC_TX_ABRT_SOURCE 0x80 > > #define DW_IC_CON_MASTER 0x1 > @@ -756,6 +757,16 @@ static int __devinit dw_i2c_probe(struct > goto err_unuse_clocks; > } > { > + u32 comp_type = dw_readl(dev, DW_IC_COMP_TYPE); > + > + if (comp_type != 0x44570140) { > + dev_err(&pdev->dev, "Unknown Synopsys component type: " > + "0x%08x\n", comp_type); > + r = -ENODEV; > + goto err_iounmap; > + } > + } having looked at the code around here, let's just use a single u32 reg or u32 val field at the top of dw_i2c_probe and avoid the need for the {} blocks in the probe. Would like to see a patch fixing this added to the series. > + { > u32 param1 = dw_readl(dev, DW_IC_COMP_PARAM_1); > > dev->tx_fifo_depth = ((param1 >> 16) & 0xff) + 1; > > -- > -- > To unsubscribe from this list: send the line "unsubscribe linux-i2c" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Ben (ben@xxxxxxxxx, http://www.fluff.org/) 'a smiley only costs 4 bytes' -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html