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staging: unisys: refactor ULTRA_channel_client_acquire_os() 

Remove the unnecessary macro ULTRA_CHANNEL_CLIENT_ACQUIRE_OS for calling
the function, and rename the function to
spar_channel_client_acquire_os(). Get rid of unneeded parameters logCtx,
file, and line, and Fix CamelCase names:

pChannel => ch
chanId => id
pChan => hdr

Signed-off-by: Benjamin Romer <benjamin.romer@unisys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Benjamin Romer 2014-10-23 14:30:01 -04:00 committed by Greg Kroah-Hartman
parent ff97a3fdf5
commit 9f16930e55
3 changed files with 43 additions and 56 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

93
drivers/staging/unisys/common-spar/include/channels/channel.h
View File

@ -149,10 +149,6 @@ ULTRA_CHANNELCLI_STRING(u32 v)
mb(); /* required for channel synch */ \
} while (0)
#define ULTRA_CHANNEL_CLIENT_ACQUIRE_OS(pChan, chanId, logCtx) \
ULTRA_channel_client_acquire_os(pChan, chanId, logCtx, \
(char *)__FILE__, __LINE__, \
(char *)__func__)
#define ULTRA_CHANNEL_CLIENT_RELEASE_OS(pChan, chanId, logCtx) \
ULTRA_channel_client_release_os(pChan, chanId, logCtx, \
(char *)__FILE__, __LINE__, (char *)__func__)
@ -412,47 +408,43 @@ pathname_last_n_nodes(u8 *s, unsigned int n)
}
static inline int
ULTRA_channel_client_acquire_os(void __iomem *pChannel, u8 *chanId,
void *logCtx, char *file, int line, char *func)
spar_channel_client_acquire_os(void __iomem *ch, u8 *id)
{
struct channel_header __iomem *pChan = pChannel;
struct channel_header __iomem *hdr = ch;
if (readl(&pChan->cli_state_os) == CHANNELCLI_DISABLED) {
if ((readb(&pChan->cli_error_os)
if (readl(&hdr->cli_state_os) == CHANNELCLI_DISABLED) {
if ((readb(&hdr->cli_error_os)
& ULTRA_CLIERROROS_THROTTLEMSG_DISABLED) == 0) {
/* we are NOT throttling this message */
writeb(readb(&pChan->cli_error_os) |
writeb(readb(&hdr->cli_error_os) |
ULTRA_CLIERROROS_THROTTLEMSG_DISABLED,
&pChan->cli_error_os);
&hdr->cli_error_os);
/* throttle until acquire successful */
pr_info("%s Channel StateTransition INVALID! - acquire failed because OS client DISABLED @%s:%d\n",
chanId, pathname_last_n_nodes((u8 *) file, 4),
line);
pr_info("%s Channel StateTransition INVALID! - acquire failed because OS client DISABLED\n",
id);
}
return 0;
}
if ((readl(&pChan->cli_state_os) != CHANNELCLI_OWNED)
&& (readl(&pChan->cli_state_boot) == CHANNELCLI_DISABLED)) {
if ((readl(&hdr->cli_state_os) != CHANNELCLI_OWNED)
&& (readl(&hdr->cli_state_boot) == CHANNELCLI_DISABLED)) {
/* Our competitor is DISABLED, so we can transition to OWNED */
pr_info("%s Channel StateTransition (%s) %s(%d)-->%s(%d) @%s:%d\n",
chanId, "cli_state_os",
ULTRA_CHANNELCLI_STRING(readl(&pChan->cli_state_os)),
readl(&pChan->cli_state_os),
pr_info("%s Channel StateTransition (%s) %s(%d)-->%s(%d)\n",
id, "cli_state_os",
ULTRA_CHANNELCLI_STRING(readl(&hdr->cli_state_os)),
readl(&hdr->cli_state_os),
ULTRA_CHANNELCLI_STRING(CHANNELCLI_OWNED),
CHANNELCLI_OWNED,
pathname_last_n_nodes((u8 *) file, 4), line);
writel(CHANNELCLI_OWNED, &pChan->cli_state_os);
CHANNELCLI_OWNED);
writel(CHANNELCLI_OWNED, &hdr->cli_state_os);
mb(); /* required for channel synch */
}
if (readl(&pChan->cli_state_os) == CHANNELCLI_OWNED) {
if (readb(&pChan->cli_error_os) != 0) {
if (readl(&hdr->cli_state_os) == CHANNELCLI_OWNED) {
if (readb(&hdr->cli_error_os) != 0) {
/* we are in an error msg throttling state;
* come out of it */
pr_info("%s Channel OS client acquire now successful @%s:%d\n",
chanId, pathname_last_n_nodes((u8 *) file, 4),
line);
writeb(0, &pChan->cli_error_os);
pr_info("%s Channel OS client acquire now successful\n",
id);
writeb(0, &hdr->cli_error_os);
}
return 1;
}
@ -460,48 +452,43 @@ ULTRA_channel_client_acquire_os(void __iomem *pChannel, u8 *chanId,
/* We have to do it the "hard way". We transition to BUSY,
* and can use the channel iff our competitor has not also
* transitioned to BUSY. */
if (readl(&pChan->cli_state_os) != CHANNELCLI_ATTACHED) {
if ((readb(&pChan->cli_error_os)
if (readl(&hdr->cli_state_os) != CHANNELCLI_ATTACHED) {
if ((readb(&hdr->cli_error_os)
& ULTRA_CLIERROROS_THROTTLEMSG_NOTATTACHED) == 0) {
/* we are NOT throttling this message */
writeb(readb(&pChan->cli_error_os) |
writeb(readb(&hdr->cli_error_os) |
ULTRA_CLIERROROS_THROTTLEMSG_NOTATTACHED,
&pChan->cli_error_os);
&hdr->cli_error_os);
/* throttle until acquire successful */
pr_info("%s Channel StateTransition INVALID! - acquire failed because OS client NOT ATTACHED (state=%s(%d)) @%s:%d\n",
chanId, ULTRA_CHANNELCLI_STRING(
readl(&pChan->cli_state_os)),
readl(&pChan->cli_state_os),
pathname_last_n_nodes((u8 *) file, 4),
line);
pr_info("%s Channel StateTransition INVALID! - acquire failed because OS client NOT ATTACHED (state=%s(%d))\n",
id, ULTRA_CHANNELCLI_STRING(
readl(&hdr->cli_state_os)),
readl(&hdr->cli_state_os));
}
return 0;
}
writel(CHANNELCLI_BUSY, &pChan->cli_state_os);
writel(CHANNELCLI_BUSY, &hdr->cli_state_os);
mb(); /* required for channel synch */
if (readl(&pChan->cli_state_boot) == CHANNELCLI_BUSY) {
if ((readb(&pChan->cli_error_os)
if (readl(&hdr->cli_state_boot) == CHANNELCLI_BUSY) {
if ((readb(&hdr->cli_error_os)
& ULTRA_CLIERROROS_THROTTLEMSG_BUSY) == 0) {
/* we are NOT throttling this message */
writeb(readb(&pChan->cli_error_os) |
writeb(readb(&hdr->cli_error_os) |
ULTRA_CLIERROROS_THROTTLEMSG_BUSY,
&pChan->cli_error_os);
&hdr->cli_error_os);
/* throttle until acquire successful */
pr_info("%s Channel StateTransition failed - host OS acquire failed because boot BUSY @%s:%d\n",
chanId, pathname_last_n_nodes((u8 *) file, 4),
line);
pr_info("%s Channel StateTransition failed - host OS acquire failed because boot BUSY\n",
id);
}
/* reset busy */
writel(CHANNELCLI_ATTACHED, &pChan->cli_state_os);
writel(CHANNELCLI_ATTACHED, &hdr->cli_state_os);
mb(); /* required for channel synch */
return 0;
}
if (readb(&pChan->cli_error_os) != 0) {
if (readb(&hdr->cli_error_os) != 0) {
/* we are in an error msg throttling state; come out of it */
pr_info("%s Channel OS client acquire now successful @%s:%d\n",
chanId, pathname_last_n_nodes((u8 *) file, 4),
line);
writeb(0, &pChan->cli_error_os);
pr_info("%s Channel OS client acquire now successful\n", id);
writeb(0, &hdr->cli_error_os);
}
return 1;
}

2
drivers/staging/unisys/uislib/uisqueue.c
View File

@ -81,7 +81,7 @@ do_locked_client_insert(struct uisqueue_info *queueinfo,
u8 rc = 0;
spin_lock_irqsave(lock, flags);
if (!ULTRA_CHANNEL_CLIENT_ACQUIRE_OS(queueinfo->chan, channelId, NULL))
if (!spar_channel_client_acquire_os(queueinfo->chan, channelId))
goto unlock;
if (visor_signal_insert(queueinfo->chan, whichqueue, pSignal)) {
queueinfo->packets_sent++;

4
drivers/staging/unisys/virthba/virthba.c
View File

@ -1276,8 +1276,8 @@ drain_queue(struct virthba_info *virthbainfo, struct chaninfo *dc,
while (1) {
spin_lock_irqsave(&virthbainfo->chinfo.insertlock, flags);
if (!ULTRA_CHANNEL_CLIENT_ACQUIRE_OS(dc->queueinfo->chan,
"vhba", NULL)) {
if (!spar_channel_client_acquire_os(dc->queueinfo->chan,
"vhba")) {
spin_unlock_irqrestore(&virthbainfo->chinfo.insertlock,
flags);
virthbainfo->acquire_failed_cnt++;