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* include/grub/ata.h (grub_ata): Add a new element maxbuffer.

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* grub-core/disk/ata.c (grub_ata_readwrite): Limit to ata->maxbuffer.
	* grub-core/disk/pata.c (grub_pata_open): Set ata->maxbuffer.
	* grub-core/disk/ahci.c (grub_ahci_open): Likewise.
This commit is contained in:
Vladimir 'phcoder' Serbinenko 2012-01-29 19:00:30 +01:00
parent 74310bd8a7
commit 2b5336a24a
5 changed files with 16 additions and 2 deletions
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7
grub-core/disk/ata.c
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@ -278,6 +278,7 @@ grub_ata_readwrite (grub_disk_t disk, grub_disk_addr_t sector,
grub_ata_addressing_t addressing = ata->addr;
grub_size_t batch;
int cmd, cmd_write;
grub_size_t nsectors = 0;
grub_dprintf("ata", "grub_ata_readwrite (size=%llu, rw=%d)\n",
(unsigned long long) size, rw);
@ -314,9 +315,11 @@ grub_ata_readwrite (grub_disk_t disk, grub_disk_addr_t sector,
cmd = GRUB_ATA_CMD_READ_SECTORS;
cmd_write = GRUB_ATA_CMD_WRITE_SECTORS;
}
}
}
if (batch > (ata->maxbuffer >> ata->log_sector_size))
batch = (ata->maxbuffer >> ata->log_sector_size);
grub_size_t nsectors = 0;
while (nsectors < size)
{
struct grub_disk_ata_pass_through_parms parms;