The struct 'ni_private' holds the variable 'serial_number' which post
assignment is never used. Remove the variable and code pertaining to
obtaining its value.
As a side note, this also fixes the following sparse error:
drivers/staging/comedi/drivers//ni_pcimio.c:1229:32: warning: incorrect type in
assignment (different base types)
drivers/staging/comedi/drivers//ni_pcimio.c:1229:32: expected restricted
__be32 [usertype] serial_number
drivers/staging/comedi/drivers//ni_pcimio.c:1229:32: got unsigned int
Signed-off-by: Karthik Nayak <karthik....@gmail.com>
---
drivers/staging/comedi/drivers/ni_pcimio.c | 9 ---------
drivers/staging/comedi/drivers/ni_stc.h | 1 -
2 files changed, 10 deletions(-)
diff --git a/drivers/staging/comedi/drivers/ni_pcimio.c
b/drivers/staging/comedi/drivers/ni_pcimio.c
index cdb66eab1292..3a96913c025e 100644
--- a/drivers/staging/comedi/drivers/ni_pcimio.c
+++ b/drivers/staging/comedi/drivers/ni_pcimio.c
@@ -1202,8 +1202,6 @@ static void m_series_init_eeprom_buffer(struct
comedi_device *dev)
resource_size_t daq_phys_addr;
static const int Start_Cal_EEPROM = 0x400;
static const unsigned int window_size = 10;
- static const int serial_number_eeprom_offset = 0x4;
- static const int serial_number_eeprom_length = 0x4;
unsigned int old_iodwbsr_bits;
unsigned int old_iodwbsr1_bits;
unsigned int old_iodwcr1_bits;
@@ -1221,13 +1219,6 @@ static void m_series_init_eeprom_buffer(struct
comedi_device *dev)
writel(0x1 | old_iodwcr1_bits, mite->mmio + MITE_IODWCR_1);
writel(0xf, mite->mmio + 0x30);
- BUG_ON(serial_number_eeprom_length > sizeof(devpriv->serial_number));
- for (i = 0; i < serial_number_eeprom_length; ++i) {
- char *byte_ptr = (char *)&devpriv->serial_number + i;
- *byte_ptr = ni_readb(dev, serial_number_eeprom_offset + i);
- }
- devpriv->serial_number = be32_to_cpu(devpriv->serial_number);
-
for (i = 0; i < M_SERIES_EEPROM_SIZE; ++i)
devpriv->eeprom_buffer[i] = ni_readb(dev, Start_Cal_EEPROM + i);
diff --git a/drivers/staging/comedi/drivers/ni_stc.h
b/drivers/staging/comedi/drivers/ni_stc.h
index f27b545f83eb..61138e86a455 100644
--- a/drivers/staging/comedi/drivers/ni_stc.h
+++ b/drivers/staging/comedi/drivers/ni_stc.h
@@ -1031,7 +1031,6 @@ struct ni_private {
unsigned short ai_fifo_buffer[0x2000];
u8 eeprom_buffer[M_SERIES_EEPROM_SIZE];
- __be32 serial_number;
struct mite *mite;
struct mite_channel *ai_mite_chan;
--
2.11.1
