From: Markus Armbruster <arm...@redhat.com> It's a copy of dev->serial. The copy was needed for non-qdevified controllers, which lacked dev.
Note that pci_piix3_xen_ide_unplug() did not clear the copy (it only cleared the copy of bs). Begs the question whether stale data could have been used after unplug. As far as I can tell, the copy was used only when the copy of bs was non-null, thus no bug there. Signed-off-by: Markus Armbruster <arm...@redhat.com> --- hw/ide/core.c | 14 ++++---------- hw/ide/internal.h | 3 +-- hw/ide/qdev.c | 10 +++++----- 3 files changed, 10 insertions(+), 17 deletions(-) diff --git a/hw/ide/core.c b/hw/ide/core.c index 31e696c..153e7cf 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -94,7 +94,7 @@ static void ide_identify(IDEState *s) put_le16(p + 4, 512 * s->dev->conf.secs); /* XXX: retired, remove ? */ put_le16(p + 5, 512); /* XXX: retired, remove ? */ put_le16(p + 6, s->dev->conf.secs); - padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */ + padstr((char *)(p + 10), s->dev->serial, 20); /* serial number */ put_le16(p + 20, 3); /* XXX: retired, remove ? */ put_le16(p + 21, 512); /* cache size in sectors */ put_le16(p + 22, 4); /* ecc bytes */ @@ -198,7 +198,7 @@ static void ide_atapi_identify(IDEState *s) p = (uint16_t *)s->io_buffer; /* Removable CDROM, 50us response, 12 byte packets */ put_le16(p + 0, (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0)); - padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */ + padstr((char *)(p + 10), s->dev->serial, 20); /* serial number */ put_le16(p + 20, 3); /* buffer type */ put_le16(p + 21, 512); /* cache size in sectors */ put_le16(p + 22, 4); /* ecc bytes */ @@ -257,7 +257,7 @@ static void ide_cfata_identify(IDEState *s) put_le16(p + 6, s->dev->conf.secs); /* Default sectors per track */ put_le16(p + 7, s->nb_sectors >> 16); /* Sectors per card */ put_le16(p + 8, s->nb_sectors); /* Sectors per card */ - padstr((char *)(p + 10), s->drive_serial_str, 20); /* serial number */ + padstr((char *)(p + 10), s->dev->serial, 20); /* serial number */ put_le16(p + 22, 0x0004); /* ECC bytes */ padstr((char *) (p + 23), s->dev->version, 8); /* Firmware Revision */ padstr((char *) (p + 27), s->drive_model_str, 40);/* Model number */ @@ -2089,7 +2089,7 @@ static const BlockDevOps ide_cd_block_ops = { }; int ide_init_drive(IDEState *s, IDEDriveKind kind, - const char *serial, const char *model, + const char *model, uint64_t wwn) { BlockDriverState *bs = s->dev->conf.bs; @@ -2119,12 +2119,6 @@ int ide_init_drive(IDEState *s, IDEDriveKind kind, return -1; } } - if (serial) { - pstrcpy(s->drive_serial_str, sizeof(s->drive_serial_str), serial); - } else { - snprintf(s->drive_serial_str, sizeof(s->drive_serial_str), - "QM%05d", s->drive_serial); - } if (model) { pstrcpy(s->drive_model_str, sizeof(s->drive_model_str), model); } else { diff --git a/hw/ide/internal.h b/hw/ide/internal.h index 4c0fb8e..f6b5b7a 100644 --- a/hw/ide/internal.h +++ b/hw/ide/internal.h @@ -350,7 +350,6 @@ struct IDEState { int identify_set; uint8_t identify_data[512]; int drive_serial; - char drive_serial_str[21]; char drive_model_str[41]; uint64_t wwn; /* ide regs */ @@ -544,7 +543,7 @@ void ide_data_writel(void *opaque, uint32_t addr, uint32_t val); uint32_t ide_data_readl(void *opaque, uint32_t addr); int ide_init_drive(IDEState *s, IDEDriveKind kind, - const char *serial, const char *model, + const char *model, uint64_t wwn); void ide_init2(IDEBus *bus, qemu_irq irq); void ide_init_ioport(IDEBus *bus, ISADevice *isa, int iobase, int iobase2); diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c index 0326360..c1a4cb6 100644 --- a/hw/ide/qdev.c +++ b/hw/ide/qdev.c @@ -160,19 +160,19 @@ static int ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind) return -1; } + if (!dev->serial) { + dev->serial = g_strdup_printf("QM%05d", s->drive_serial); + } + if (!dev->version) { dev->version = g_strdup(qemu_get_version()); } if (ide_init_drive(s, kind, - dev->serial, dev->model, dev->wwn) < 0) { + dev->model, dev->wwn) < 0) { return -1; } - if (!dev->serial) { - dev->serial = g_strdup(s->drive_serial_str); - } - add_boot_device_path(dev->conf.bootindex, &dev->qdev, dev->unit ? "/disk@1" : "/disk@0"); -- 1.8.1.4