Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik...

[sfrench/cifs-2.6.git] / drivers / usb / gadget / file_storage.c

diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 8d7f1e84cd7b048eadc36df840c383ff7c7bfab8..8b975d15538ddff6fb93e2757e7d1888be538881 100644 (file)
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -567,6 +567,7 @@ struct lun {
        unsigned int    ro : 1;
        unsigned int    prevent_medium_removal : 1;
        unsigned int    registered : 1;
+       unsigned int    info_valid : 1;
 
        u32             sense_data;
        u32             sense_data_info;
@@ -1656,6 +1657,7 @@ static int do_read(struct fsg_dev *fsg)
                        curlun->sense_data =
                                        SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
                        curlun->sense_data_info = file_offset >> 9;
+                       curlun->info_valid = 1;
                        bh->inreq->length = 0;
                        bh->state = BUF_STATE_FULL;
                        break;
@@ -1691,6 +1693,7 @@ static int do_read(struct fsg_dev *fsg)
                if (nread < amount) {
                        curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
                        curlun->sense_data_info = file_offset >> 9;
+                       curlun->info_valid = 1;
                        break;
                }
 
@@ -1785,6 +1788,7 @@ static int do_write(struct fsg_dev *fsg)
                                curlun->sense_data =
                                        SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
                                curlun->sense_data_info = usb_offset >> 9;
+                               curlun->info_valid = 1;
                                continue;
                        }
                        amount -= (amount & 511);
@@ -1827,6 +1831,7 @@ static int do_write(struct fsg_dev *fsg)
                        if (bh->outreq->status != 0) {
                                curlun->sense_data = SS_COMMUNICATION_FAILURE;
                                curlun->sense_data_info = file_offset >> 9;
+                               curlun->info_valid = 1;
                                break;
                        }
 
@@ -1868,6 +1873,7 @@ static int do_write(struct fsg_dev *fsg)
                        if (nwritten < amount) {
                                curlun->sense_data = SS_WRITE_ERROR;
                                curlun->sense_data_info = file_offset >> 9;
+                               curlun->info_valid = 1;
                                break;
                        }
 
@@ -2010,6 +2016,7 @@ static int do_verify(struct fsg_dev *fsg)
                        curlun->sense_data =
                                        SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
                        curlun->sense_data_info = file_offset >> 9;
+                       curlun->info_valid = 1;
                        break;
                }
 
@@ -2036,6 +2043,7 @@ static int do_verify(struct fsg_dev *fsg)
                if (nread == 0) {
                        curlun->sense_data = SS_UNRECOVERED_READ_ERROR;
                        curlun->sense_data_info = file_offset >> 9;
+                       curlun->info_valid = 1;
                        break;
                }
                file_offset += nread;
@@ -2079,6 +2087,7 @@ static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
        struct lun      *curlun = fsg->curlun;
        u8              *buf = (u8 *) bh->buf;
        u32             sd, sdinfo;
+       int             valid;
 
        /*
         * From the SCSI-2 spec., section 7.9 (Unit attention condition):
@@ -2106,15 +2115,18 @@ static int do_request_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
                fsg->bad_lun_okay = 1;
                sd = SS_LOGICAL_UNIT_NOT_SUPPORTED;
                sdinfo = 0;
+               valid = 0;
        } else {
                sd = curlun->sense_data;
                sdinfo = curlun->sense_data_info;
+               valid = curlun->info_valid << 7;
                curlun->sense_data = SS_NO_SENSE;
                curlun->sense_data_info = 0;
+               curlun->info_valid = 0;
        }
 
        memset(buf, 0, 18);
-       buf[0] = 0x80 | 0x70;                   // Valid, current error
+       buf[0] = valid | 0x70;                  // Valid, current error
        buf[2] = SK(sd);
        put_be32(&buf[3], sdinfo);              // Sense information
        buf[7] = 18 - 8;                        // Additional sense length
@@ -2703,6 +2715,7 @@ static int check_command(struct fsg_dev *fsg, int cmnd_size,
                if (fsg->cmnd[0] != SC_REQUEST_SENSE) {
                        curlun->sense_data = SS_NO_SENSE;
                        curlun->sense_data_info = 0;
+                       curlun->info_valid = 0;
                }
        } else {
                fsg->curlun = curlun = NULL;
@@ -3332,6 +3345,7 @@ static void handle_exception(struct fsg_dev *fsg)
                        curlun->sense_data = curlun->unit_attention_data =
                                        SS_NO_SENSE;
                        curlun->sense_data_info = 0;
+                       curlun->info_valid = 0;
                }
                fsg->state = FSG_STATE_IDLE;
        }
@@ -3873,21 +3887,26 @@ static int __init fsg_bind(struct usb_gadget *gadget)
        for (i = 0; i < fsg->nluns; ++i) {
                curlun = &fsg->luns[i];
                curlun->ro = mod_data.ro[i];
+               curlun->dev.release = lun_release;
                curlun->dev.parent = &gadget->dev;
                curlun->dev.driver = &fsg_driver.driver;
                dev_set_drvdata(&curlun->dev, fsg);
                snprintf(curlun->dev.bus_id, BUS_ID_SIZE,
                                "%s-lun%d", gadget->dev.bus_id, i);
 
-               if ((rc = device_register(&curlun->dev)) != 0)
+               if ((rc = device_register(&curlun->dev)) != 0) {
                        INFO(fsg, "failed to register LUN%d: %d\n", i, rc);
-               else {
-                       curlun->registered = 1;
-                       curlun->dev.release = lun_release;
-                       device_create_file(&curlun->dev, &dev_attr_ro);
-                       device_create_file(&curlun->dev, &dev_attr_file);
-                       kref_get(&fsg->ref);
+                       goto out;
+               }
+               if ((rc = device_create_file(&curlun->dev,
+                                       &dev_attr_ro)) != 0 ||
+                               (rc = device_create_file(&curlun->dev,
+                                       &dev_attr_file)) != 0) {
+                       device_unregister(&curlun->dev);
+                       goto out;
                }
+               curlun->registered = 1;
+               kref_get(&fsg->ref);
 
                if (mod_data.file[i] && *mod_data.file[i]) {
                        if ((rc = open_backing_file(curlun,
@@ -3982,7 +4001,7 @@ static int __init fsg_bind(struct usb_gadget *gadget)
        usb_gadget_set_selfpowered(gadget);
 
        snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
-                       system_utsname.sysname, system_utsname.release,
+                       init_utsname()->sysname, init_utsname()->release,
                        gadget->name);
 
        /* On a real device, serial[] would be loaded from permanent