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Support hot unplugging

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-08-20 19:34:29 +02:00
parent 60c1ffdfdc
commit 52d8255d20
7 changed files with 120 additions and 51 deletions
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10
disk/usbms.c
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@ -65,6 +65,7 @@ typedef struct grub_usbms_dev *grub_usbms_dev_t;
/* FIXME: remove limit. */
#define MAX_USBMS_DEVICES 128
static grub_usbms_dev_t grub_usbms_devices[MAX_USBMS_DEVICES];
static int first_available_slot = 0;
static grub_err_t
grub_usbms_reset (grub_usb_device_t dev, int interface)
@ -96,13 +97,12 @@ grub_usbms_attach (grub_usb_device_t usbdev, int configno, int interfno)
unsigned curnum;
grub_usb_err_t err;
for (curnum = 0; curnum < ARRAY_SIZE (grub_usbms_devices); curnum++)
if (!grub_usbms_devices[curnum])
break;
if (curnum == ARRAY_SIZE (grub_usbms_devices))
if (first_available_slot == ARRAY_SIZE (grub_usbms_devices))
return 0;
curnum = first_available_slot;
first_available_slot++;
interf = usbdev->config[configno].interf[interfno].descif;
if ((interf->subclass != GRUB_USBMS_SUBCLASS_BULK