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cpu/kinetis/i2c: Suppress cppcheck unreadVariable warning

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On cppcheck 1.82 it throws a warning.
Since it costs cycles and does nothing the ++dummy is (void)dummy.
A warning suppression is added so the CI is happy.
This commit is contained in:
MrKevinWeiss 2019-06-21 11:03:12 +02:00
parent 6419a7a3aa
commit ec62f1ccce
1 changed files with 3 additions and 1 deletions
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4
cpu/kinetis/periph/i2c.c
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@ -380,8 +380,10 @@ int i2c_read_bytes(i2c_t dev, uint16_t addr, void *data, size_t len, uint8_t fla
/* Initiate master receive mode by reading the data register once when
* the C1[TX] bit is cleared and C1[MST] is set */
volatile uint8_t dummy;
/* cppcheck-suppress unreadVariable
* (reason: needed to empty D register) */
dummy = i2c->D;
++dummy;
(void)dummy;
/* Wait until the ISR signals back */
TRACE("i2c: read C1=%02x S=%02x\n", (unsigned)i2c->C1, (unsigned)i2c->S);
thread_flags_t tflg = thread_flags_wait_any(THREAD_FLAG_KINETIS_I2C | THREAD_FLAG_TIMEOUT);