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* grub-core/disk/efi/efidisk.c: Detect floppies by ACPI ID.

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It improves performance in qemu.
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Vladimir 'phcoder' Serbinenko 2013-04-17 19:05:57 +02:00
parent a0f8f3acf1
commit b193e10034
2 changed files with 19 additions and 4 deletions
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5
ChangeLog
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@ -1,3 +1,8 @@
2013-04-17 Vladimir Serbinenko <phcoder@gmail.com>
* grub-core/disk/efi/efidisk.c: Detect floppies by ACPI ID.
It improves performance in qemu.
2013-04-17 Vladimir Serbinenko <phcoder@gmail.com>
* build-aux/snippet: Add missing gnulib files.

18
grub-core/disk/efi/efidisk.c
View file

@ -329,18 +329,28 @@ name_devices (struct grub_efidisk_data *devices)
{
grub_efi_device_path_t *dp;
grub_efi_block_io_media_t *m;
int is_floppy = 0;
dp = d->last_device_path;
if (! dp)
continue;
m = d->block_io->media;
if (m->logical_partition)
if (GRUB_EFI_DEVICE_PATH_TYPE (dp) == GRUB_EFI_ACPI_DEVICE_PATH_TYPE
&& GRUB_EFI_DEVICE_PATH_SUBTYPE (dp)
== GRUB_EFI_ACPI_DEVICE_PATH_SUBTYPE)
{
grub_efi_acpi_device_path_t *acpi
= (grub_efi_acpi_device_path_t *) dp;
/* Floppy EISA ID. */
if (acpi->hid == 0x60441d0 || acpi->hid == 0x70041d0
|| acpi->hid == 0x70141d1)
is_floppy = 1;
}
if (is_floppy)
{
/* Only one partition in a non-media device. Assume that this
is a floppy drive. */
#ifdef DEBUG_NAMES
grub_printf ("adding a floppy by guessing: ");
grub_printf ("adding a floppy: ");
grub_efi_print_device_path (d->device_path);
#endif
add_device (&fd_devices, d);