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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-09-20 08:15:23 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-09-20 08:15:23 -0700 |
| commit | bdab18633a302c82b5e5d5dbc4e38b0baf9c0837 (patch) | |
| tree | 0446500af9a76d4e8b2a72a0a41391ceede73a10 /drivers/ata/pata_netcell.c | |
| download | linux-stable-bdab18633a302c82b5e5d5dbc4e38b0baf9c0837.tar.gz linux-stable-bdab18633a302c82b5e5d5dbc4e38b0baf9c0837.zip | |
Merge tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipgrafted
Pull futex fix from Ingo Molnar:
- Also allocate a default private futex hash on vfork() as well, to
avoid races with (private) futex waiters (Peter Zijlstra)
* tag 'locking-urgent-2026-09-20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Also allocate private hash on vfork()
Diffstat (limited to 'drivers/ata/pata_netcell.c')
| -rw-r--r-- | drivers/ata/pata_netcell.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/drivers/ata/pata_netcell.c b/drivers/ata/pata_netcell.c new file mode 100644 index 000000000..c0b2897fc --- /dev/null +++ b/drivers/ata/pata_netcell.c @@ -0,0 +1,109 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * pata_netcell.c - Netcell PATA driver + * + * (c) 2006 Red Hat + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/blkdev.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <scsi/scsi_host.h> +#include <linux/libata.h> +#include <linux/ata.h> + +#define DRV_NAME "pata_netcell" +#define DRV_VERSION "0.1.7" + +/* No PIO or DMA methods needed for this device */ + +static unsigned int netcell_read_id(struct ata_device *adev, + struct ata_taskfile *tf, __le16 *id) +{ + unsigned int err_mask = ata_do_dev_read_id(adev, tf, id); + + /* Firmware forgets to mark words 85-87 valid */ + if (err_mask == 0) + id[ATA_ID_CSF_DEFAULT] |= cpu_to_le16(0x4000); + return err_mask; +} + +static const struct scsi_host_template netcell_sht = { + ATA_BMDMA_SHT(DRV_NAME), +}; + +static struct ata_port_operations netcell_ops = { + .inherits = &ata_bmdma_port_ops, + .cable_detect = ata_cable_80wire, + .read_id = netcell_read_id, +}; + + +/** + * netcell_init_one - Register Netcell ATA PCI device with kernel services + * @pdev: PCI device to register + * @ent: Entry in netcell_pci_tbl matching with @pdev + * + * Called from kernel PCI layer. + * + * LOCKING: + * Inherited from PCI layer (may sleep). + * + * RETURNS: + * Zero on success, or -ERRNO value. + */ + +static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) +{ + static const struct ata_port_info info = { + .flags = ATA_FLAG_SLAVE_POSS, + /* Actually we don't really care about these as the + firmware deals with it */ + .pio_mask = ATA_PIO4, + .mwdma_mask = ATA_MWDMA2, + .udma_mask = ATA_UDMA5, /* UDMA 133 */ + .port_ops = &netcell_ops, + }; + const struct ata_port_info *port_info[] = { &info, NULL }; + int rc; + + ata_print_version_once(&pdev->dev, DRV_VERSION); + + rc = pcim_enable_device(pdev); + if (rc) + return rc; + + /* Any chip specific setup/optimisation/messages here */ + ata_pci_bmdma_clear_simplex(pdev); + + /* And let the library code do the work */ + return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0); +} + +static const struct pci_device_id netcell_pci_tbl[] = { + { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), }, + + { } /* terminate list */ +}; + +static struct pci_driver netcell_pci_driver = { + .name = DRV_NAME, + .id_table = netcell_pci_tbl, + .probe = netcell_init_one, + .remove = ata_pci_remove_one, +#ifdef CONFIG_PM_SLEEP + .suspend = ata_pci_device_suspend, + .resume = ata_pci_device_resume, +#endif +}; + +module_pci_driver(netcell_pci_driver); + +MODULE_AUTHOR("Alan Cox"); +MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID"); +MODULE_LICENSE("GPL"); +MODULE_DEVICE_TABLE(pci, netcell_pci_tbl); +MODULE_VERSION(DRV_VERSION); |
