pcmcia: extend error reporting and debug messages in core

Add a few more error and debug messages to the PCMCIA core.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

2 files changed, 43 insertions, 13 deletions

diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c
index b0ec9c614ce7..b229f6d9e443 100644
--- a/drivers/pcmcia/cs.c
+++ b/drivers/pcmcia/cs.c
@@ -752,14 +752,17 @@ int pcmcia_reset_card(struct pcmcia_socket *skt)
         mutex_lock(&skt->skt_mutex);
         do {
                 if (!(skt->state & SOCKET_PRESENT)) {
+                        dev_dbg(&skt->dev, "can't reset, not present\n");
                         ret = -ENODEV;
                         break;
                 }
                 if (skt->state & SOCKET_SUSPEND) {
+                        dev_dbg(&skt->dev, "can't reset, suspended\n");
                         ret = -EBUSY;
                         break;
                 }
                 if (skt->state & SOCKET_CARDBUS) {
+                        dev_dbg(&skt->dev, "can't reset, is cardbus\n");
                         ret = -EPERM;
                         break;
                 }
diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index 349bc5662fff..cda48ea9b6fd 100644
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -159,8 +159,10 @@ int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
         s = p_dev->socket;
         c = p_dev->function_config;
 
-        if (!(c->state & CONFIG_LOCKED))
+        if (!(c->state & CONFIG_LOCKED)) {
+                dev_dbg(&s->dev, "Configuration isnt't locked\n");
                 return -EACCES;
+        }
 
         addr = (c->ConfigBase + reg->Offset) >> 1;
 
@@ -174,6 +176,7 @@ int pcmcia_access_configuration_register(struct pcmcia_device *p_dev,
                 pcmcia_write_cis_mem(s, 1, addr, 1, &val);
                 break;
         default:
+                dev_dbg(&s->dev, "Invalid conf register request\n");
                 return -EINVAL;
                 break;
         }
@@ -264,10 +267,14 @@ int pcmcia_modify_configuration(struct pcmcia_device *p_dev,
         s = p_dev->socket;
         c = p_dev->function_config;
 
-        if (!(s->state & SOCKET_PRESENT))
+        if (!(s->state & SOCKET_PRESENT)) {
+                dev_dbg(&s->dev, "No card present\n");
                 return -ENODEV;
-        if (!(c->state & CONFIG_LOCKED))
+        }
+        if (!(c->state & CONFIG_LOCKED)) {
+                dev_dbg(&s->dev, "Configuration isnt't locked\n");
                 return -EACCES;
+        }
 
         if (mod->Attributes & CONF_IRQ_CHANGE_VALID) {
                 if (mod->Attributes & CONF_ENABLE_IRQ) {
@@ -442,8 +449,10 @@ int pcmcia_release_window(window_handle_t win)
         if ((win == NULL) || (win->magic != WINDOW_MAGIC))
                 return -EINVAL;
         s = win->sock;
-        if (!(win->handle->_win & CLIENT_WIN_REQ(win->index)))
+        if (!(win->handle->_win & CLIENT_WIN_REQ(win->index))) {
+                dev_dbg(&s->dev, "not releasing unknown window\n");
                 return -EINVAL;
+        }
 
         /* Shut down memory window */
         win->ctl.flags &= ~MAP_ACTIVE;
@@ -482,8 +491,10 @@ int pcmcia_request_configuration(struct pcmcia_device *p_dev,
                 return -EINVAL;
         }
         c = p_dev->function_config;
-        if (c->state & CONFIG_LOCKED)
+        if (c->state & CONFIG_LOCKED) {
+                dev_dbg(&s->dev, "Configuration is locked\n");
                 return -EACCES;
+        }
 
         /* Do power control.  We don't allow changes in Vcc. */
         s->socket.Vpp = req->Vpp;
@@ -595,14 +606,18 @@ int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
         struct pcmcia_socket *s = p_dev->socket;
         config_t *c;
 
-        if (!(s->state & SOCKET_PRESENT))
+        if (!(s->state & SOCKET_PRESENT)) {
+                dev_dbg(&s->dev, "No card present\n");
                 return -ENODEV;
+        }
 
         if (!req)
                 return -EINVAL;
         c = p_dev->function_config;
-        if (c->state & CONFIG_LOCKED)
+        if (c->state & CONFIG_LOCKED) {
+                dev_dbg(&s->dev, "Configuration is locked\n");
                 return -EACCES;
+        }
         if (c->state & CONFIG_IO_REQ) {
                 dev_dbg(&s->dev, "IO already configured\n");
                 return -EBUSY;
@@ -666,11 +681,15 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
         int ret = -EINVAL, irq = 0;
         int type;
 
-        if (!(s->state & SOCKET_PRESENT))
+        if (!(s->state & SOCKET_PRESENT)) {
+                dev_dbg(&s->dev, "No card present\n");
                 return -ENODEV;
+        }
         c = p_dev->function_config;
-        if (c->state & CONFIG_LOCKED)
+        if (c->state & CONFIG_LOCKED) {
+                dev_dbg(&s->dev, "Configuration is locked\n");
                 return -EACCES;
+        }
         if (c->state & CONFIG_IRQ_REQ) {
                 dev_dbg(&s->dev, "IRQ already configured\n");
                 return -EBUSY;
@@ -731,8 +750,10 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
 #endif
         /* only assign PCI irq if no IRQ already assigned */
         if (ret && !s->irq.AssignedIRQ) {
-                if (!s->pci_irq)
+                if (!s->pci_irq) {
+                        dev_printk(KERN_INFO, &s->dev, "no IRQ found\n");
                         return ret;
+                }
                 type = IRQF_SHARED;
                 irq = s->pci_irq;
         }
@@ -740,8 +761,11 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
         if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) {
                 ret = request_irq(irq, req->Handler, type,
                                   p_dev->devname, req->Instance);
-                if (ret)
+                if (ret) {
+                        dev_printk(KERN_INFO, &s->dev,
+                                "request_irq() failed\n");
                         return ret;
+                }
         }
 
         /* Make sure the fact the request type was overridden is passed back */
@@ -780,8 +804,10 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h
         u_long align;
         int w;
 
-        if (!(s->state & SOCKET_PRESENT))
+        if (!(s->state & SOCKET_PRESENT)) {
+                dev_dbg(&s->dev, "No card present\n");
                 return -ENODEV;
+        }
         if (req->Attributes & (WIN_PAGED | WIN_SHARED)) {
                 dev_dbg(&s->dev, "bad attribute setting for iomem region\n");
                 return -EINVAL;
@@ -1020,7 +1046,8 @@ static int pcmcia_do_get_tuple(struct pcmcia_device *p_dev, tuple_t *tuple,
         if (*get->buf) {
                 get->len = tuple->TupleDataLen;
                 memcpy(*get->buf, tuple->TupleData, tuple->TupleDataLen);
-        }
+        } else
+                dev_dbg(&p_dev->dev, "do_get_tuple: out of memory\n");
         return 0;
 };