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usb: musb: sunxi: Don't print error on MUSB_ULPI_BUSCONTROL access

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Error message appears during suspend, where musb driver is storing
the register state in musb_save_context():
```
musb-sunxi 1c19000.usb: Error unknown readb offset 112
```

Print warning instead to avoid confusion.

Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
Link: https://lore.kernel.org/r/20211019131244.1568560-1-r.stratiienko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roman Stratiienko 2021-10-19 16:12:44 +03:00 committed by Greg Kroah-Hartman
parent e4ce9ed835
commit 02f8b13603
1 changed files with 8 additions and 0 deletions
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8
drivers/usb/musb/sunxi.c
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@ -440,6 +440,10 @@ static u8 sunxi_musb_readb(void __iomem *addr, u32 offset)
return 0xde;
return readb(addr + SUNXI_MUSB_CONFIGDATA);
case MUSB_ULPI_BUSCONTROL:
dev_warn(sunxi_musb->controller->parent,
"sunxi-musb does not have ULPI bus control register\n");
return 0;
/* Offset for these is fixed by sunxi_musb_busctl_offset() */
case SUNXI_MUSB_TXFUNCADDR:
case SUNXI_MUSB_TXHUBADDR:
@ -494,6 +498,10 @@ static void sunxi_musb_writeb(void __iomem *addr, unsigned offset, u8 data)
return writeb(data, addr + SUNXI_MUSB_TXFIFOSZ);
case MUSB_RXFIFOSZ:
return writeb(data, addr + SUNXI_MUSB_RXFIFOSZ);
case MUSB_ULPI_BUSCONTROL:
dev_warn(sunxi_musb->controller->parent,
"sunxi-musb does not have ULPI bus control register\n");
return;
/* Offset for these is fixed by sunxi_musb_busctl_offset() */
case SUNXI_MUSB_TXFUNCADDR:
case SUNXI_MUSB_TXHUBADDR: