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path: root/drivers/staging/csr/io.c
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Diffstat (limited to 'drivers/staging/csr/io.c')
-rw-r--r--drivers/staging/csr/io.c151
1 files changed, 59 insertions, 92 deletions
diff --git a/drivers/staging/csr/io.c b/drivers/staging/csr/io.c
index af9c28f073b9..f9b5c22c00b8 100644
--- a/drivers/staging/csr/io.c
+++ b/drivers/staging/csr/io.c
@@ -31,6 +31,7 @@
* ---------------------------------------------------------------------------
*/
#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
#include "csr_wifi_hip_unifi.h"
#include "csr_wifi_hip_unifiversion.h"
@@ -76,9 +77,28 @@ DEFINE_SEMAPHORE(Unifi_instance_mutex);
*/
DECLARE_WAIT_QUEUE_HEAD(Unifi_cleanup_wq);
+#ifdef CONFIG_PROC_FS
+/*
+ * seq_file wrappers for procfile show routines.
+ */
+static int uf_proc_show(struct seq_file *m, void *v);
+
+#define UNIFI_DEBUG_TXT_BUFFER (8 * 1024)
+
+static int uf_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open_size(file, uf_proc_show, PDE_DATA(inode),
+ UNIFI_DEBUG_TXT_BUFFER);
+}
+
+static const struct file_operations uf_proc_fops = {
+ .open = uf_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
-static int uf_read_proc(char *page, char **start, off_t offset, int count,
- int *eof, void *data);
+#endif /* CONFIG_PROC_FS */
#ifdef CSR_WIFI_RX_PATH_SPLIT
@@ -327,8 +347,8 @@ register_unifi_sdio(CsrSdioFunction *sdio_dev, int bus_id, struct device *dev)
* The following complex casting is in place in order to eliminate 64-bit compilation warning
* "cast to/from pointer from/to integer of different size"
*/
- if (!create_proc_read_entry(priv->proc_entry_name, 0, 0,
- uf_read_proc, (void *)(long)priv->instance))
+ if (!proc_create_data(priv->proc_entry_name, 0, NULL,
+ &uf_proc_fops, (void *)(long)priv->instance))
{
unifi_error(priv, "unifi: can't create /proc/driver/unifi\n");
}
@@ -827,7 +847,7 @@ uf_put_instance(int inst)
/*
* ---------------------------------------------------------------------------
- * uf_read_proc
+ * uf_proc_show
*
* Read method for driver node in /proc/driver/unifi0
*
@@ -844,107 +864,54 @@ uf_put_instance(int inst)
* ---------------------------------------------------------------------------
*/
#ifdef CONFIG_PROC_FS
-static int
-uf_read_proc(char *page, char **start, off_t offset, int count,
- int *eof, void *data)
+static int uf_proc_show(struct seq_file *m, void *v)
{
-#define UNIFI_DEBUG_TXT_BUFFER 8*1024
- unifi_priv_t *priv;
- int actual_amount_to_copy;
- char *p, *orig_p;
- s32 remain = UNIFI_DEBUG_TXT_BUFFER;
- s32 written;
- int i;
-
- /*
- * The following complex casting is in place in order to eliminate 64-bit compilation warning
- * "cast to/from pointer from/to integer of different size"
- */
- priv = uf_find_instance((int)(long)data);
- if (!priv) {
- return 0;
- }
-
- p = kmalloc( UNIFI_DEBUG_TXT_BUFFER, GFP_KERNEL );
-
- orig_p = p;
-
- written = scnprintf(p, remain, "UniFi SDIO Driver: %s %s %s\n",
- CSR_WIFI_VERSION, __DATE__, __TIME__);
- UNIFI_SNPRINTF_RET(p, remain, written);
+ unifi_priv_t *priv;
+ int i;
+
+ /*
+ * The following complex casting is in place in order to eliminate
+ * 64-bit compilation warning "cast to/from pointer from/to integer of
+ * different size"
+ */
+ priv = uf_find_instance((long)m->private);
+ if (!priv)
+ return 0;
+
+ seq_printf(m, "UniFi SDIO Driver: %s %s %s\n",
+ CSR_WIFI_VERSION, __DATE__, __TIME__);
#ifdef CSR_SME_USERSPACE
- written = scnprintf(p, remain, "SME: CSR userspace ");
- UNIFI_SNPRINTF_RET(p, remain, written);
+ seq_puts(m, "SME: CSR userspace ");
#ifdef CSR_SUPPORT_WEXT
- written = scnprintf(p, remain, "with WEXT support\n");
+ seq_puts(m, "with WEXT support\n");
#else
- written = scnprintf(p, remain, "\n");
+ seq_putc(m, '\n');
#endif /* CSR_SUPPORT_WEXT */
- UNIFI_SNPRINTF_RET(p, remain, written);
#endif /* CSR_SME_USERSPACE */
#ifdef CSR_NATIVE_LINUX
- written = scnprintf(p, remain, "SME: native\n");
- UNIFI_SNPRINTF_RET(p, remain, written);
+ seq_puts(m, "SME: native\n");
#endif
#ifdef CSR_SUPPORT_SME
- written = scnprintf(p, remain,
- "Firmware (ROM) build:%u, Patch:%u\n",
- priv->card_info.fw_build,
- priv->sme_versions.firmwarePatch);
- UNIFI_SNPRINTF_RET(p, remain, written);
+ seq_printf(m, "Firmware (ROM) build:%u, Patch:%u\n",
+ priv->card_info.fw_build,
+ priv->sme_versions.firmwarePatch);
#endif
- p += unifi_print_status(priv->card, p, &remain);
-
- written = scnprintf(p, remain, "Last dbg str: %s\n",
- priv->last_debug_string);
- UNIFI_SNPRINTF_RET(p, remain, written);
-
- written = scnprintf(p, remain, "Last dbg16:");
- UNIFI_SNPRINTF_RET(p, remain, written);
- for (i = 0; i < 8; i++) {
- written = scnprintf(p, remain, " %04X",
- priv->last_debug_word16[i]);
- UNIFI_SNPRINTF_RET(p, remain, written);
- }
- written = scnprintf(p, remain, "\n");
- UNIFI_SNPRINTF_RET(p, remain, written);
- written = scnprintf(p, remain, " ");
- UNIFI_SNPRINTF_RET(p, remain, written);
- for (; i < 16; i++) {
- written = scnprintf(p, remain, " %04X",
- priv->last_debug_word16[i]);
- UNIFI_SNPRINTF_RET(p, remain, written);
- }
- written = scnprintf(p, remain, "\n");
- UNIFI_SNPRINTF_RET(p, remain, written);
- *start = page;
-
- written = UNIFI_DEBUG_TXT_BUFFER - remain;
-
- if( offset >= written )
- {
- *eof = 1;
- kfree( orig_p );
- return(0);
- }
-
- if( offset + count > written )
- {
- actual_amount_to_copy = written - offset;
- *eof = 1;
- }
- else
- {
- actual_amount_to_copy = count;
- }
- memcpy( page, &(orig_p[offset]), actual_amount_to_copy );
+ unifi_print_status(priv->card, m);
- kfree( orig_p );
+ seq_printf(m, "Last dbg str: %s\n", priv->last_debug_string);
- return( actual_amount_to_copy );
-} /* uf_read_proc() */
+ seq_puts(m, "Last dbg16:");
+ for (i = 0; i < 8; i++)
+ seq_printf(m, " %04X", priv->last_debug_word16[i]);
+ seq_putc(m, '\n');
+ seq_puts(m, " ");
+ for (; i < 16; i++)
+ seq_printf(m, " %04X", priv->last_debug_word16[i]);
+ seq_putc(m, '\n');
+ return 0;
+}
#endif
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