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usb_storage: Restore non-EHCI support 

The commit 5dd95cf made the MSC driver EHCI-specific. This patch restores a
basic support of non-EHCI HCDs, like before that commit.

The fallback transfer size is certainly not optimal, but at least it should work
like before.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Ilya Yanok <ilya.yanok@cogentembedded.com>
Cc: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
utp
Benoît Thébaudeau 2012-08-10 18:26:50 +02:00 committed by Marek Vasut
parent 5cec214ecd
commit cffcc50358
1 changed files with 4 additions and 0 deletions
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4
common/usb_storage.c
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@ -155,11 +155,15 @@ struct us_data {
trans_cmnd transport; /* transport routine */
};
#ifdef CONFIG_USB_EHCI
/*
* The U-Boot EHCI driver cannot handle more than 5 page aligned buffers
* of 4096 bytes in a transfer without running itself out of qt_buffers
*/
#define USB_MAX_XFER_BLK(start, blksz) (((4096 * 5) - (start % 4096)) / blksz)
#else
#define USB_MAX_XFER_BLK(start, blksz) 20
#endif
static struct us_data usb_stor[USB_MAX_STOR_DEV];