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soft_i2c: prevent compiler warnings if driver does not use CPU Pins.

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This patch fixes the following warnings, when using
the soft_i2c driver using no CPU pins on MPC82xx or MPC8xx
systems:

soft_i2c.c: In function 'send_reset':
soft_i2c.c:93: warning: unused variable 'immr'
soft_i2c.c: In function 'send_start':
soft_i2c.c:124: warning: unused variable 'immr'
soft_i2c.c: In function 'send_stop':
soft_i2c.c:146: warning: unused variable 'immr'
soft_i2c.c: In function 'send_ack':
soft_i2c.c:171: warning: unused variable 'immr'
soft_i2c.c: In function 'write_byte':
soft_i2c.c:196: warning: unused variable 'immr'
soft_i2c.c: In function 'read_byte':
soft_i2c.c:244: warning: unused variable 'immr'

Signed-off-by: Heiko Schocher <hs@denx.de>
This commit is contained in:
Heiko Schocher 2008-10-15 09:35:26 +02:00 • committed by Wolfgang Denk
parent 799b784aa0
commit 98aed37958
2 changed files with 15 additions and 37 deletions
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9
include/i2c.h
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@ -67,6 +67,15 @@
#define CFG_SPD_BUS_NUM 0
#endif
#ifndef I2C_SOFT_DECLARATIONS
# if defined(CONFIG_MPC8260)
# define I2C_SOFT_DECLARATIONS volatile ioport_t *iop = ioport_addr((immap_t *)CFG_IMMR, I2C_PORT);
# elif defined(CONFIG_8xx)
# define I2C_SOFT_DECLARATIONS volatile immap_t *immr = (immap_t *)CFG_IMMR;
# else
# define I2C_SOFT_DECLARATIONS
# endif
#endif
/*
* Initialization, must be called once on start up, may be called
* repeatedly to change the speed and slave addresses.