diff options
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/f_mass_storage.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index f4911c09022..218f51db972 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -302,7 +302,6 @@ static const char fsg_string_interface[] = "Mass Storage"; #define FSG_NO_INTR_EP 1 -#define FSG_BUFFHD_STATIC_BUFFER 1 #define FSG_NO_DEVICE_STRINGS 1 #define FSG_NO_OTG 1 #define FSG_NO_INTR_EP 1 @@ -2762,13 +2761,19 @@ static struct fsg_common *fsg_common_init(struct fsg_common *common, /* Data buffers cyclic list */ - /* Buffers in buffhds are static -- no need for additional - * allocation. */ bh = common->buffhds; - i = FSG_NUM_BUFFERS - 1; + i = FSG_NUM_BUFFERS; + goto buffhds_first_it; do { bh->next = bh + 1; - } while (++bh, --i); + ++bh; +buffhds_first_it: + bh->buf = kmalloc(FSG_BUFLEN, GFP_KERNEL); + if (unlikely(!bh->buf)) { + rc = -ENOMEM; + goto error_release; + } + } while (--i); bh->next = common->buffhds; @@ -2871,6 +2876,7 @@ static void fsg_common_release(struct kref *ref) container_of(ref, struct fsg_common, ref); unsigned i = common->nluns; struct fsg_lun *lun = common->luns; + struct fsg_buffhd *bh; /* If the thread isn't already dead, tell it to exit now */ if (common->state != FSG_STATE_TERMINATED) { @@ -2892,6 +2898,13 @@ static void fsg_common_release(struct kref *ref) } kfree(common->luns); + + i = FSG_NUM_BUFFERS; + bh = common->buffhds; + do { + kfree(bh->buf); + } while (++bh, --i); + if (common->free_storage_on_release) kfree(common); } |