[SCSI] bfa: fix regular sparse check warnings.

Fix all sparse check warnings from make C=2.

Signed-off-by: Maggie <xmzhang@brocade.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

9 files changed, 52 insertions, 28 deletions

diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
index 8d651309302..30665c74446 100644
--- a/drivers/scsi/bfa/bfa_fcs_lport.c
+++ b/drivers/scsi/bfa/bfa_fcs_lport.c
@@ -2103,7 +2103,7 @@ bfa_fcs_lport_fdmi_timeout(void *arg)
         bfa_sm_send_event(fdmi, FDMISM_EVENT_TIMEOUT);
 }
 
-void
+static void
 bfa_fcs_fdmi_get_hbaattr(struct bfa_fcs_lport_fdmi_s *fdmi,
                          struct bfa_fcs_fdmi_hba_attr_s *hba_attr)
 {
@@ -2147,7 +2147,7 @@ bfa_fcs_fdmi_get_hbaattr(struct bfa_fcs_lport_fdmi_s *fdmi,
         hba_attr->max_ct_pyld = cpu_to_be32(FC_MAX_PDUSZ);
 }
 
-void
+static void
 bfa_fcs_fdmi_get_portattr(struct bfa_fcs_lport_fdmi_s *fdmi,
                           struct bfa_fcs_fdmi_port_attr_s *port_attr)
 {
@@ -4150,7 +4150,7 @@ bfa_fcs_lport_ns_query(struct bfa_fcs_lport_s *port)
         bfa_sm_send_event(ns, NSSM_EVENT_NS_QUERY);
 }
 
-void
+static void
 bfa_fcs_lport_ns_boot_target_disc(bfa_fcs_lport_t *port)
 {
 
diff --git a/drivers/scsi/bfa/bfa_fcs_rport.c b/drivers/scsi/bfa/bfa_fcs_rport.c
index cf4a6e73e60..60f2ddf23eb 100644
--- a/drivers/scsi/bfa/bfa_fcs_rport.c
+++ b/drivers/scsi/bfa/bfa_fcs_rport.c
@@ -2359,14 +2359,6 @@ bfa_fcs_rport_itnim_ack(struct bfa_fcs_rport_s *rport)
         bfa_sm_send_event(rport, RPSM_EVENT_FC4_OFFLINE);
 }
 
-/*
- *      Called by fcptm to notify that the ITN cleanup is done.
- */
-void
-bfa_fcs_rport_tin_ack(struct bfa_fcs_rport_s *rport)
-{
-        bfa_sm_send_event(rport, RPSM_EVENT_FC4_OFFLINE);
-}
 
 /*
  *      brief
diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
index 9c407a87a1a..eb1b005e5bc 100644
--- a/drivers/scsi/bfa/bfa_ioc.h
+++ b/drivers/scsi/bfa/bfa_ioc.h
@@ -421,7 +421,7 @@ bfa_cb_image_get_chunk(int type, u32 off)
                 return bfi_image_ct_cna_get_chunk(off); break;
         case BFI_IMAGE_CB_FC:
                 return bfi_image_cb_fc_get_chunk(off);  break;
-        default: return 0;
+        default: return NULL;
         }
 }
 
diff --git a/drivers/scsi/bfa/bfa_ioc_cb.c b/drivers/scsi/bfa/bfa_ioc_cb.c
index 90994504385..61f03cbe543 100644
--- a/drivers/scsi/bfa/bfa_ioc_cb.c
+++ b/drivers/scsi/bfa/bfa_ioc_cb.c
@@ -32,7 +32,7 @@ static void bfa_ioc_cb_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix);
 static void bfa_ioc_cb_notify_hbfail(struct bfa_ioc_s *ioc);
 static void bfa_ioc_cb_ownership_reset(struct bfa_ioc_s *ioc);
 
-struct bfa_ioc_hwif_s hwif_cb;
+static struct bfa_ioc_hwif_s hwif_cb;
 
 /*
  * Called from bfa_ioc_attach() to map asic specific calls.
diff --git a/drivers/scsi/bfa/bfa_ioc_ct.c b/drivers/scsi/bfa/bfa_ioc_ct.c
index 115730c0aa7..79fb3120363 100644
--- a/drivers/scsi/bfa/bfa_ioc_ct.c
+++ b/drivers/scsi/bfa/bfa_ioc_ct.c
@@ -32,7 +32,7 @@ static void bfa_ioc_ct_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix);
 static void bfa_ioc_ct_notify_hbfail(struct bfa_ioc_s *ioc);
 static void bfa_ioc_ct_ownership_reset(struct bfa_ioc_s *ioc);
 
-struct bfa_ioc_hwif_s hwif_ct;
+static struct bfa_ioc_hwif_s hwif_ct;
 
 /*
  * Called from bfa_ioc_attach() to map asic specific calls.
diff --git a/drivers/scsi/bfa/bfad.c b/drivers/scsi/bfa/bfad.c
index 6797720213b..4239fdf0d2d 100644
--- a/drivers/scsi/bfa/bfad.c
+++ b/drivers/scsi/bfa/bfad.c
@@ -61,12 +61,12 @@ int		msix_disable_cb = 0, msix_disable_ct = 0;
 u32     bfi_image_ct_fc_size, bfi_image_ct_cna_size, bfi_image_cb_fc_size;
 u32     *bfi_image_ct_fc, *bfi_image_ct_cna, *bfi_image_cb_fc;
 
-const char *msix_name_ct[] = {
+static const char *msix_name_ct[] = {
         "cpe0", "cpe1", "cpe2", "cpe3",
         "rme0", "rme1", "rme2", "rme3",
         "ctrl" };
 
-const char *msix_name_cb[] = {
+static const char *msix_name_cb[] = {
         "cpe0", "cpe1", "cpe2", "cpe3",
         "rme0", "rme1", "rme2", "rme3",
         "eemc", "elpu0", "elpu1", "epss", "mlpu" };
diff --git a/drivers/scsi/bfa/bfad_attr.c b/drivers/scsi/bfa/bfad_attr.c
index ed9fff440b5..d727f055bd8 100644
--- a/drivers/scsi/bfa/bfad_attr.c
+++ b/drivers/scsi/bfa/bfad_attr.c
@@ -25,7 +25,7 @@
 /*
  * FC transport template entry, get SCSI target port ID.
  */
-void
+static void
 bfad_im_get_starget_port_id(struct scsi_target *starget)
 {
         struct Scsi_Host *shost;
@@ -51,7 +51,7 @@ bfad_im_get_starget_port_id(struct scsi_target *starget)
 /*
  * FC transport template entry, get SCSI target nwwn.
  */
-void
+static void
 bfad_im_get_starget_node_name(struct scsi_target *starget)
 {
         struct Scsi_Host *shost;
@@ -77,7 +77,7 @@ bfad_im_get_starget_node_name(struct scsi_target *starget)
 /*
  * FC transport template entry, get SCSI target pwwn.
  */
-void
+static void
 bfad_im_get_starget_port_name(struct scsi_target *starget)
 {
         struct Scsi_Host *shost;
@@ -103,7 +103,7 @@ bfad_im_get_starget_port_name(struct scsi_target *starget)
 /*
  * FC transport template entry, get SCSI host port ID.
  */
-void
+static void
 bfad_im_get_host_port_id(struct Scsi_Host *shost)
 {
         struct bfad_im_port_s *im_port =
diff --git a/drivers/scsi/bfa/bfad_debugfs.c b/drivers/scsi/bfa/bfad_debugfs.c
index 1fedeeb4ac1..0fbd620474c 100644
--- a/drivers/scsi/bfa/bfad_debugfs.c
+++ b/drivers/scsi/bfa/bfad_debugfs.c
@@ -208,7 +208,7 @@ bfad_debugfs_read(struct file *file, char __user *buf,
         if (!debug || !debug->debug_buffer)
                 return 0;
 
-        return memory_read_from_buffer(buf, nbytes, pos,
+        return simple_read_from_buffer(buf, nbytes, pos,
                                 debug->debug_buffer, debug->buffer_len);
 }
 
@@ -254,7 +254,7 @@ bfad_debugfs_read_regrd(struct file *file, char __user *buf,
         if (!bfad->regdata)
                 return 0;
 
-        rc = memory_read_from_buffer(buf, nbytes, pos,
+        rc = simple_read_from_buffer(buf, nbytes, pos,
                         bfad->regdata, bfad->reglen);
 
         if ((*pos + nbytes) >= bfad->reglen) {
@@ -279,15 +279,31 @@ bfad_debugfs_write_regrd(struct file *file, const char __user *buf,
         u32 *regbuf;
         void __iomem *rb, *reg_addr;
         unsigned long flags;
+        void *kern_buf;
 
-        rc = sscanf(buf, "%x:%x", &addr, &len);
+        kern_buf = kzalloc(nbytes, GFP_KERNEL);
+
+        if (!kern_buf) {
+                printk(KERN_INFO "bfad[%d]: Failed to allocate buffer\n",
+                                bfad->inst_no);
+                return -ENOMEM;
+        }
+
+        if (copy_from_user(kern_buf, (void  __user *)buf, nbytes)) {
+                kfree(kern_buf);
+                return -ENOMEM;
+        }
+
+        rc = sscanf(kern_buf, "%x:%x", &addr, &len);
         if (rc < 2) {
                 printk(KERN_INFO
                         "bfad[%d]: %s failed to read user buf\n",
                         bfad->inst_no, __func__);
+                kfree(kern_buf);
                 return -EINVAL;
         }
 
+        kfree(kern_buf);
         kfree(bfad->regdata);
         bfad->regdata = NULL;
         bfad->reglen = 0;
@@ -339,14 +355,30 @@ bfad_debugfs_write_regwr(struct file *file, const char __user *buf,
         int addr, val, rc;
         void __iomem *reg_addr;
         unsigned long flags;
+        void *kern_buf;
+
+        kern_buf = kzalloc(nbytes, GFP_KERNEL);
+
+        if (!kern_buf) {
+                printk(KERN_INFO "bfad[%d]: Failed to allocate buffer\n",
+                                bfad->inst_no);
+                return -ENOMEM;
+        }
+
+        if (copy_from_user(kern_buf, (void  __user *)buf, nbytes)) {
+                kfree(kern_buf);
+                return -ENOMEM;
+        }
 
-        rc = sscanf(buf, "%x:%x", &addr, &val);
+        rc = sscanf(kern_buf, "%x:%x", &addr, &val);
         if (rc < 2) {
                 printk(KERN_INFO
                         "bfad[%d]: %s failed to read user buf\n",
                         bfad->inst_no, __func__);
+                kfree(kern_buf);
                 return -EINVAL;
         }
+        kfree(kern_buf);
 
         addr &= BFA_REG_ADDRMSK(bfa); /* offset only 17 bit and word align */
 
@@ -359,7 +391,7 @@ bfad_debugfs_write_regwr(struct file *file, const char __user *buf,
                 return -EINVAL;
         }
 
-        reg_addr = (u32 *) ((u8 *) bfa_ioc_bar0(ioc) + addr);
+        reg_addr = (bfa_ioc_bar0(ioc)) + addr;
         spin_lock_irqsave(&bfad->bfad_lock, flags);
         writel(val, reg_addr);
         spin_unlock_irqrestore(&bfad->bfad_lock, flags);
diff --git a/drivers/scsi/bfa/bfad_drv.h b/drivers/scsi/bfa/bfad_drv.h
index d5ce2349ac5..b9bcb0b99b8 100644
--- a/drivers/scsi/bfa/bfad_drv.h
+++ b/drivers/scsi/bfa/bfad_drv.h
@@ -263,10 +263,10 @@ struct bfad_hal_comp {
  */
 #define nextLowerInt(x)                         \
 do {                                            \
-        int i;                                  \
+        int __i;                                  \
         (*x)--;                                 \
-        for (i = 1; i < (sizeof(int)*8); i <<= 1) \
-                (*x) = (*x) | (*x) >> i;        \
+        for (__i = 1; __i < (sizeof(int)*8); __i <<= 1) \
+                (*x) = (*x) | (*x) >> __i;      \
         (*x)++;                                 \
         (*x) = (*x) >> 1;                       \
 } while (0)