forked from Minki/linux
[SCSI] eata_pio: Clean up proc handling, bracketing and use cpu_relax()
So its ancient, its crap, but it kept showing up in my scans for stuff that wanted fixing... - Redo the proc code to be far cleaner - Clean various return (0) type constructs - Use cpu_relax() The various waits ought to time out but thats another issue and probably not worth solving. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
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parent
f72abc2110
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1a1d641490
@ -107,59 +107,44 @@ static struct scsi_host_template driver_template;
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static int eata_pio_proc_info(struct Scsi_Host *shost, char *buffer, char **start, off_t offset,
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int length, int rw)
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{
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static u8 buff[512];
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int size, len = 0;
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off_t begin = 0, pos = 0;
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int len = 0;
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off_t begin = 0, pos = 0;
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if (rw)
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return -ENOSYS;
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if (offset == 0)
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memset(buff, 0, sizeof(buff));
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if (rw)
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return -ENOSYS;
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size = sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
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len += sprintf(buffer+len, "EATA (Extended Attachment) PIO driver version: "
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"%d.%d%s\n",VER_MAJOR, VER_MINOR, VER_SUB);
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len += size; pos = begin + len;
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size = sprintf(buffer + len, "queued commands: %10ld\n"
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len += sprintf(buffer + len, "queued commands: %10ld\n"
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"processed interrupts:%10ld\n", queue_counter, int_counter);
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len += size; pos = begin + len;
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size = sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
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len += sprintf(buffer + len, "\nscsi%-2d: HBA %.10s\n",
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shost->host_no, SD(shost)->name);
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len += size;
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pos = begin + len;
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size = sprintf(buffer + len, "Firmware revision: v%s\n",
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len += sprintf(buffer + len, "Firmware revision: v%s\n",
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SD(shost)->revision);
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len += size;
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pos = begin + len;
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size = sprintf(buffer + len, "IO: PIO\n");
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len += size;
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pos = begin + len;
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size = sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base);
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len += size;
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pos = begin + len;
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size = sprintf(buffer + len, "Host Bus: %s\n",
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len += sprintf(buffer + len, "IO: PIO\n");
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len += sprintf(buffer + len, "Base IO : %#.4x\n", (u32) shost->base);
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len += sprintf(buffer + len, "Host Bus: %s\n",
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(SD(shost)->bustype == 'P')?"PCI ":
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(SD(shost)->bustype == 'E')?"EISA":"ISA ");
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len += size;
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pos = begin + len;
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pos = begin + len;
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if (pos < offset) {
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len = 0;
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begin = pos;
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}
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if (pos > offset + length)
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goto stop_output;
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if (pos < offset) {
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len = 0;
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begin = pos;
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}
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if (pos > offset + length)
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goto stop_output;
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stop_output:
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DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
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*start=buffer+(offset-begin); /* Start of wanted data */
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len-=(offset-begin); /* Start slop */
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if(len>length)
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len = length; /* Ending slop */
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DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
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stop_output:
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DBG(DBG_PROC, printk("2pos: %ld offset: %ld len: %d\n", pos, offset, len));
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*start = buffer + (offset - begin); /* Start of wanted data */
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len -= (offset - begin); /* Start slop */
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if (len > length)
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len = length; /* Ending slop */
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DBG(DBG_PROC, printk("3pos: %ld offset: %ld len: %d\n", pos, offset, len));
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return (len);
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return len;
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}
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static int eata_pio_release(struct Scsi_Host *sh)
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@ -438,7 +423,7 @@ static int eata_pio_queue(struct scsi_cmnd *cmd,
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"returning DID_BUS_BUSY, done.\n", cmd->pid);
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done(cmd);
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cp->status = FREE;
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return (0);
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return 0;
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}
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/* FIXME: timeout */
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while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
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@ -452,7 +437,7 @@ static int eata_pio_queue(struct scsi_cmnd *cmd,
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"Queued base %#.4lx pid: %ld "
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"slot %d irq %d\n", sh->base, cmd->pid, y, sh->irq));
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return (0);
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return 0;
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}
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static int eata_pio_abort(struct scsi_cmnd *cmd)
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@ -589,23 +574,28 @@ static char *get_pio_board_data(unsigned long base, unsigned int irq, unsigned i
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cp.cp_cdb[5] = 0;
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if (eata_pio_send_command(base, EATA_CMD_PIO_SEND_CP))
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return (NULL);
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while (!(inb(base + HA_RSTATUS) & HA_SDRQ));
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return NULL;
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while (!(inb(base + HA_RSTATUS) & HA_SDRQ))
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cpu_relax();
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outsw(base + HA_RDATA, &cp, cplen);
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outb(EATA_CMD_PIO_TRUNC, base + HA_WCOMMAND);
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for (z = 0; z < cppadlen; z++)
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outw(0, base + HA_RDATA);
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while (inb(base + HA_RSTATUS) & HA_SBUSY);
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while (inb(base + HA_RSTATUS) & HA_SBUSY)
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cpu_relax();
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if (inb(base + HA_RSTATUS) & HA_SERROR)
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return (NULL);
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return NULL;
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else if (!(inb(base + HA_RSTATUS) & HA_SDRQ))
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return (NULL);
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return NULL;
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else {
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insw(base + HA_RDATA, &buff, 127);
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while (inb(base + HA_RSTATUS) & HA_SDRQ)
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inw(base + HA_RDATA);
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return (buff);
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return buff;
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}
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}
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