pcmcia: deprecate CS_IN_USE

[firefly-linux-kernel-4.4.55.git] / drivers / pcmcia / pcmcia_resource.c

diff --git a/drivers/pcmcia/pcmcia_resource.c b/drivers/pcmcia/pcmcia_resource.c
index 0ac3ea92a1c5e19f606d37b6b65fdba6ce76e7da..670465d4aac2c0903e36007fac362c8c650639ff 100644 (file)
--- a/drivers/pcmcia/pcmcia_resource.c
+++ b/drivers/pcmcia/pcmcia_resource.c
@@ -609,23 +609,30 @@ int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req)
        c = p_dev->function_config;
        if (c->state & CONFIG_LOCKED)
                return -EACCES;
-       if (c->state & CONFIG_IO_REQ)
-               return CS_IN_USE;
+       if (c->state & CONFIG_IO_REQ) {
+               ds_dbg(s, 0, "IO already configured\n");
+               return -EBUSY;
+       }
        if (req->Attributes1 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS))
                return CS_BAD_ATTRIBUTE;
        if ((req->NumPorts2 > 0) &&
            (req->Attributes2 & (IO_SHARED | IO_FORCE_ALIAS_ACCESS)))
                return CS_BAD_ATTRIBUTE;
 
+       ds_dbg(s, 1, "trying to allocate resource 1\n");
        if (alloc_io_space(s, req->Attributes1, &req->BasePort1,
-                          req->NumPorts1, req->IOAddrLines))
-               return CS_IN_USE;
+                          req->NumPorts1, req->IOAddrLines)) {
+               ds_dbg(s, 0, "allocation of resource 1 failed\n");
+               return -EBUSY;
+       }
 
        if (req->NumPorts2) {
+               ds_dbg(s, 1, "trying to allocate resource 2\n");
                if (alloc_io_space(s, req->Attributes2, &req->BasePort2,
                                   req->NumPorts2, req->IOAddrLines)) {
+                       ds_dbg(s, 0, "allocation of resource 2 failed\n");
                        release_io_space(s, req->BasePort1, req->NumPorts1);
-                       return CS_IN_USE;
+                       return -EBUSY;
                }
        }
 
@@ -658,7 +665,7 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
 {
        struct pcmcia_socket *s = p_dev->socket;
        config_t *c;
-       int ret = CS_IN_USE, irq = 0;
+       int ret = -EINVAL, irq = 0;
        int type;
 
        if (!(s->state & SOCKET_PRESENT))
@@ -666,8 +673,10 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
        c = p_dev->function_config;
        if (c->state & CONFIG_LOCKED)
                return -EACCES;
-       if (c->state & CONFIG_IRQ_REQ)
-               return CS_IN_USE;
+       if (c->state & CONFIG_IRQ_REQ) {
+               ds_dbg(s, 0, "IRQ already configured\n");
+               return -EBUSY;
+       }
 
        /* Decide what type of interrupt we are registering */
        type = 0;
@@ -730,8 +739,10 @@ int pcmcia_request_irq(struct pcmcia_device *p_dev, irq_req_t *req)
        }
 
        if (ret && (req->Attributes & IRQ_HANDLE_PRESENT)) {
-               if (request_irq(irq, req->Handler, type,  p_dev->devname, req->Instance))
-                       return CS_IN_USE;
+               ret = request_irq(irq, req->Handler, type,
+                                 p_dev->devname, req->Instance);
+               if (ret)
+                       return ret;
        }
 
        /* Make sure the fact the request type was overridden is passed back */
@@ -792,8 +803,10 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h
        /* Allocate system memory window */
        for (w = 0; w < MAX_WIN; w++)
                if (!(s->state & SOCKET_WIN_REQ(w))) break;
-       if (w == MAX_WIN)
-               return CS_IN_USE;
+       if (w == MAX_WIN) {
+               ds_dbg(s, 0, "all windows are used already\n");
+               return -EINVAL;
+       }
 
        win = &s->win[w];
        win->magic = WINDOW_MAGIC;
@@ -804,8 +817,10 @@ int pcmcia_request_window(struct pcmcia_device **p_dev, win_req_t *req, window_h
        if (!(s->features & SS_CAP_STATIC_MAP)) {
                win->ctl.res = pcmcia_find_mem_region(req->Base, req->Size, align,
                                                      (req->Attributes & WIN_MAP_BELOW_1MB), s);
-               if (!win->ctl.res)
-                       return CS_IN_USE;
+               if (!win->ctl.res) {
+                       ds_dbg(s, 0, "allocating mem region failed\n");
+                       return -EINVAL;
+               }
        }
        (*p_dev)->_win |= CLIENT_WIN_REQ(w);