OHCI_QUIRK_FRAME_NO is currently set under either of the following conditions: 1) If a ppc-of-ohci DT node indicates a compatible string of "fsl,mpc5200-ohci" or "mpc5200-ohci" 2) If usb_ohci_pdata->no_big_frame_no is set For #1, the affected platforms already enable CONFIG_PPC_MPC52xx. For #2, there are currently no in-tree users. So we can safely remove the #ifdef, and thereby allow OHCI_QUIRK_FRAME_NO to be used by other (non-PPC) platforms that have the same property. bcm63xx and bcm3384 are two such users. Signed-off-by: Kevin Cernekee <cernekee@xxxxxxxxx> --- drivers/usb/host/ohci.h | 19 +++++++++---------- 1 file changed, 9 insertions(+), 10 deletions(-) diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h index 59f4245..bc46228 100644 --- a/drivers/usb/host/ohci.h +++ b/drivers/usb/host/ohci.h @@ -647,23 +647,22 @@ static inline u32 hc32_to_cpup (const struct ohci_hcd *ohci, const __hc32 *x) /*-------------------------------------------------------------------------*/ -/* HCCA frame number is 16 bits, but is accessed as 32 bits since not all - * hardware handles 16 bit reads. That creates a different confusion on - * some big-endian SOC implementations. Same thing happens with PSW access. +/* + * The HCCA frame number is 16 bits, but is accessed as 32 bits since not all + * hardware handles 16 bit reads. Depending on the SoC implementation, the + * frame number can wind up in either bits [31:16] (default) or + * [15:0] (OHCI_QUIRK_FRAME_NO) on big endian hosts. + * + * Somewhat similarly, the 16-bit PSW fields in a transfer descriptor are + * reordered on BE. */ -#ifdef CONFIG_PPC_MPC52xx -#define big_endian_frame_no_quirk(ohci) (ohci->flags & OHCI_QUIRK_FRAME_NO) -#else -#define big_endian_frame_no_quirk(ohci) 0 -#endif - static inline u16 ohci_frame_no(const struct ohci_hcd *ohci) { u32 tmp; if (big_endian_desc(ohci)) { tmp = be32_to_cpup((__force __be32 *)&ohci->hcca->frame_no); - if (!big_endian_frame_no_quirk(ohci)) + if (!(ohci->flags & OHCI_QUIRK_FRAME_NO)) tmp >>= 16; } else tmp = le32_to_cpup((__force __le32 *)&ohci->hcca->frame_no); -- 2.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html