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USB MSC host class driver: Don't bother retrying to initialize the FLASH if the interface is returning fatal transfer errors

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This commit is contained in:
Gregory Nutt 2013-09-09 10:00:16 -06:00
parent 40f84dfa19
commit a992004b0e
4 changed files with 20 additions and 2 deletions
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4
ChangeLog
View File

@ -5522,4 +5522,8 @@
(2013-9-6).
* drivers/usbdev/usbmsc_desc.c: Fix a warning when USB MSC is
compiled for a high-speed device (2013-9-7).
* drivers/usbhost/usbhost_storage.c: If device is returning fatal
transfer errors while attempt to initialize, don't bother with
the startup retries; abort immediately so that the device will
be reset and we can try again (2013-9-9).

2
arch/arm/src/lpc17xx/lpc17_usbhost.c
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@ -1304,7 +1304,7 @@ static int lpc17_ctrltd(struct lpc17_usbhost_s *priv, uint32_t dirpid,
else
{
uvdbg("Bad TD completion status: %d\n", EDCTRL->tdstatus);
ret = -EIO;
ret = ed->tdstatus == TD_CC_STALL ? -EPERM : -EIO;
}
}

2
arch/arm/src/sama5/sam_ohci.c
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@ -2991,7 +2991,7 @@ static int sam_transfer(FAR struct usbhost_driver_s *drvr, usbhost_ep_t ep,
else
{
udbg("ERROR: Bad TD completion status: %d\n", ed->tdstatus);
ret = -EIO;
ret = ed->tdstatus == TD_CC_STALL ? -EPERM : -EIO;
}
}

14
drivers/usbhost/usbhost_storage.c
View File

@ -1248,6 +1248,19 @@ static inline int usbhost_initvolume(FAR struct usbhost_state_s *priv)
uvdbg("Request sense\n");
ret = usbhost_requestsense(priv);
}
/* It is acceptable for a mass storage device to respond to the
* Test Unit Ready and Request Sense commands with a stall if it is
* unable to respond. But other failures mean that something is
* wrong and a device reset is in order. The transfer functions will
* return -EPERM if the transfer failed due to a stall.
*/
if (ret < 0 && ret != -EPERM)
{
udbg("ERROR: DRVR_TRANSFER returned: %d\n", ret);
break;
}
}
/* Did the unit become ready? Did an error occur? Or did we time out? */
@ -1569,6 +1582,7 @@ static inline int usbhost_tfree(FAR struct usbhost_state_s *priv)
priv->tbuffer = NULL;
priv->tbuflen = 0;
}
return result;
}