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FMC ADC 100M 14b 4cha - Software
Commit 1614801b authored by Alessandro Rubini's avatar Alessandro Rubini
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driver: trivial: clarify a loop 

Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent 401971dd
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Showing with 3 additions and 4 deletions
kernel/fa-zio-drv.c
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......@@ -853,7 +853,7 @@ static void zfat_irq_trg_fire(struct zio_cset *cset)
static void zfat_irq_acq_end(struct zio_cset *cset)
{
struct fa_dev *fa = cset->zdev->priv_d;
uint32_t val = 0;
uint32_t val;
int try = 5;
dev_dbg(&fa->fmc->dev, "Acquisition done\n");
......@@ -867,10 +867,9 @@ static void zfat_irq_acq_end(struct zio_cset *cset)
* If the state machine is _idle_ we can start the DMA transfer.
* If the state machine it is not idle, try again 5 times
*/
while (try-- && val != ZFA_STATE_IDLE) {
//udelay(2);
do {
zfa_hardware_read(fa, ZFA_STA_FSM, &val);
}
} while (try-- && val != ZFA_STATE_IDLE);
if (val != ZFA_STATE_IDLE) {
/* we can't DMA if the state machine is not idle */
......
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