On Thursday 30 May 2013 11:41:01 Michal Simek wrote:
> * To perform the read/write on the registers we need to check on
> * which bus its connected and call the appropriate write API.
> */
> -static void xilinx_fb_out_be32(struct xilinxfb_drvdata *drvdata, u32 offset,
> +static void xilinx_fb_out32(struct xilinxfb_drvdata *drvdata, u32 offset,
> u32 val)
> {
> if (drvdata->flags & PLB_ACCESS_FLAG)
> - out_be32(drvdata->regs + (offset << 2), val);
> + __raw_writel(val, drvdata->regs + (offset << 2));
> #ifdef CONFIG_PPC_DCR
> else
> dcr_write(drvdata->dcr_host, offset, val);
>
This is probably missing barriers, and is wrong on systems on which
the endianess of the device is different from the CPU.
You already have an indirection in there, so I guess it won't hurt
to create a third case for little-endian registers and add
another bit in drvdata->flags, or make it depend on the architecture,
if the endianess of the device registers is known at compile time.
Arnd
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