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| author | Kees Cook <kees+treewide@kernel.org> | 2026-09-02 15:31:14 -0700 |
|---|---|---|
| committer | Kees Cook <kees@kernel.org> | 2026-09-04 21:37:00 -0700 |
| commit | 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d (patch) | |
| tree | c65086f9bdcd48c6360fb7cb4598bca084da1f32 /drivers/scsi/arm/oak.c | |
| download | linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.tar.gz linux-stable-3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d.zip | |
treewide: refresh kmalloc_obj() conversionsgrafted
This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci
This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.
Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.
Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>
Diffstat (limited to 'drivers/scsi/arm/oak.c')
| -rw-r--r-- | drivers/scsi/arm/oak.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/drivers/scsi/arm/oak.c b/drivers/scsi/arm/oak.c new file mode 100644 index 000000000..d69245007 --- /dev/null +++ b/drivers/scsi/arm/oak.c @@ -0,0 +1,213 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Oak Generic NCR5380 driver + * + * Copyright 1995-2002, Russell King + */ + +#include <linux/module.h> +#include <linux/ioport.h> +#include <linux/blkdev.h> +#include <linux/init.h> + +#include <asm/ecard.h> +#include <asm/io.h> + +#include <scsi/scsi_host.h> + +#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata) + +#define NCR5380_read(reg) readb(hostdata->io + ((reg) << 2)) +#define NCR5380_write(reg, value) writeb(value, hostdata->io + ((reg) << 2)) + +#define NCR5380_dma_xfer_len NCR5380_dma_xfer_none +#define NCR5380_dma_recv_setup oakscsi_pread +#define NCR5380_dma_send_setup oakscsi_pwrite +#define NCR5380_dma_residual NCR5380_dma_residual_none + +#define NCR5380_queue_command oakscsi_queue_command +#define NCR5380_info oakscsi_info + +#define NCR5380_implementation_fields /* none */ + +#include "../NCR5380.h" + +#undef START_DMA_INITIATOR_RECEIVE_REG +#define START_DMA_INITIATOR_RECEIVE_REG (128 + 7) + +#define STAT ((128 + 16) << 2) +#define DATA ((128 + 8) << 2) + +static inline int oakscsi_pwrite(struct NCR5380_hostdata *hostdata, + unsigned char *addr, int len) +{ + u8 __iomem *base = hostdata->io; + +printk("writing %p len %d\n",addr, len); + + while(1) + { + int status; + while (((status = readw(base + STAT)) & 0x100)==0); + } + return 0; +} + +static inline int oakscsi_pread(struct NCR5380_hostdata *hostdata, + unsigned char *addr, int len) +{ + u8 __iomem *base = hostdata->io; + +printk("reading %p len %d\n", addr, len); + while(len > 0) + { + unsigned int status, timeout; + unsigned long b; + + timeout = 0x01FFFFFF; + + while (((status = readw(base + STAT)) & 0x100)==0) + { + timeout--; + if(status & 0x200 || !timeout) + { + printk("status = %08X\n", status); + return -1; + } + } + + if(len >= 128) + { + readsw(base + DATA, addr, 128); + addr += 128; + len -= 128; + } + else + { + b = (unsigned long) readw(base + DATA); + *addr ++ = b; + len -= 1; + if(len) + *addr ++ = b>>8; + len -= 1; + } + } + return 0; +} + +#undef STAT +#undef DATA + +#include "../NCR5380.c" + +static const struct scsi_host_template oakscsi_template = { + .module = THIS_MODULE, + .name = "Oak 16-bit SCSI", + .info = oakscsi_info, + .queuecommand = oakscsi_queue_command, + .eh_abort_handler = NCR5380_abort, + .eh_host_reset_handler = NCR5380_host_reset, + .can_queue = 16, + .this_id = 7, + .sg_tablesize = SG_ALL, + .cmd_per_lun = 2, + .dma_boundary = PAGE_SIZE - 1, + .proc_name = "oakscsi", + .cmd_size = sizeof(struct NCR5380_cmd), + .max_sectors = 128, +}; + +static int oakscsi_probe(struct expansion_card *ec, const struct ecard_id *id) +{ + struct Scsi_Host *host; + int ret; + + ret = ecard_request_resources(ec); + if (ret) + goto out; + + host = scsi_host_alloc(&oakscsi_template, sizeof(struct NCR5380_hostdata)); + if (!host) { + ret = -ENOMEM; + goto release; + } + + priv(host)->io = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC), + ecard_resource_len(ec, ECARD_RES_MEMC)); + if (!priv(host)->io) { + ret = -ENOMEM; + goto unreg; + } + + host->irq = NO_IRQ; + + ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP); + if (ret) + goto out_unmap; + + NCR5380_maybe_reset_bus(host); + + ret = scsi_add_host(host, &ec->dev); + if (ret) + goto out_exit; + + scsi_scan_host(host); + goto out; + + out_exit: + NCR5380_exit(host); + out_unmap: + iounmap(priv(host)->io); + unreg: + scsi_host_put(host); + release: + ecard_release_resources(ec); + out: + return ret; +} + +static void oakscsi_remove(struct expansion_card *ec) +{ + struct Scsi_Host *host = ecard_get_drvdata(ec); + void __iomem *base = priv(host)->io; + + ecard_set_drvdata(ec, NULL); + scsi_remove_host(host); + + NCR5380_exit(host); + scsi_host_put(host); + iounmap(base); + ecard_release_resources(ec); +} + +static const struct ecard_id oakscsi_cids[] = { + { MANU_OAK, PROD_OAK_SCSI }, + { 0xffff, 0xffff } +}; + +static struct ecard_driver oakscsi_driver = { + .probe = oakscsi_probe, + .remove = oakscsi_remove, + .id_table = oakscsi_cids, + .drv = { + .name = "oakscsi", + }, +}; + +static int __init oakscsi_init(void) +{ + return ecard_register_driver(&oakscsi_driver); +} + +static void __exit oakscsi_exit(void) +{ + ecard_remove_driver(&oakscsi_driver); +} + +module_init(oakscsi_init); +module_exit(oakscsi_exit); + +MODULE_AUTHOR("Russell King"); +MODULE_DESCRIPTION("Oak SCSI driver"); +MODULE_LICENSE("GPL"); + |
