diff options
| author | Franck Jullien <franck.jullien@gmail.com> | 2015-03-04 21:07:00 +0100 |
|---|---|---|
| committer | Marek Vasut <marex@denx.de> | 2015-04-14 05:47:47 +0200 |
| commit | cd749658d5994978579628a6333e5c2a6c8ec632 (patch) | |
| tree | fc7ee8f5808de7f10d8c838963820c3c893b1b21 /common/usb_storage.c | |
| parent | f33cdaa4c3da4a8fd35aa2f9a3172f31cc887b35 (diff) | |
usb_storage : scan all interfaces to find a storage device
Mass storage is not necessary present on interface 0. This
patch allow usb_stor_scan to look in every available interface.
Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
Diffstat (limited to 'common/usb_storage.c')
| -rw-r--r-- | common/usb_storage.c | 45 |
1 files changed, 28 insertions, 17 deletions
diff --git a/common/usb_storage.c b/common/usb_storage.c index 1411737bed..05c96a8def 100644 --- a/common/usb_storage.c +++ b/common/usb_storage.c @@ -208,6 +208,30 @@ static unsigned int usb_get_max_lun(struct us_data *us) return (len > 0) ? *result : 0; } +static int usb_storage_register(struct usb_device *dev, unsigned char iface) +{ + int lun, max_lun, start = usb_max_devs; + int nb_dev = 0; + + if (!usb_storage_probe(dev, iface, &usb_stor[usb_max_devs])) + return nb_dev; + + /* + * OK, it's a storage device. Iterate over its LUNs + * and populate `usb_dev_desc'. + */ + max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); + for (lun = 0; lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; lun++) { + usb_dev_desc[usb_max_devs].lun = lun; + if (usb_stor_get_info(dev, &usb_stor[start], + &usb_dev_desc[usb_max_devs]) == 1) { + nb_dev++; + } + } + + return nb_dev; +} + /******************************************************************************* * scan the usb and reports device info * to the user if mode = 1 @@ -215,7 +239,7 @@ static unsigned int usb_get_max_lun(struct us_data *us) */ int usb_stor_scan(int mode) { - unsigned char i; + unsigned char i, iface; struct usb_device *dev; if (mode == 1) @@ -241,23 +265,10 @@ int usb_stor_scan(int mode) if (dev == NULL) break; /* no more devices available */ - if (usb_storage_probe(dev, 0, &usb_stor[usb_max_devs])) { - /* OK, it's a storage device. Iterate over its LUNs - * and populate `usb_dev_desc'. - */ - int lun, max_lun, start = usb_max_devs; - - max_lun = usb_get_max_lun(&usb_stor[usb_max_devs]); - for (lun = 0; - lun <= max_lun && usb_max_devs < USB_MAX_STOR_DEV; - lun++) { - usb_dev_desc[usb_max_devs].lun = lun; - if (usb_stor_get_info(dev, &usb_stor[start], - &usb_dev_desc[usb_max_devs]) == 1) { - usb_max_devs++; - } - } + for (iface = 0; iface < dev->config.no_of_if; iface++) { + usb_max_devs += usb_storage_register(dev, iface); } + /* if storage device */ if (usb_max_devs == USB_MAX_STOR_DEV) { printf("max USB Storage Device reached: %d stopping\n", |