dmaengine: qcom-adm: fix wrong sizeof config in slave_config

Fix broken slave_config function that uncorrectly compare the
peripheral_size with the size of the config pointer instead of the size
of the config struct. This cause the crci value to be ignored and cause
a kernel panic on any slave that use adm driver.

To fix this, compare to the size of the struct and NOT the size of the
pointer.

Fixes: 03de6b2 ("dmaengine: qcom-adm: stop abusing slave_id config")
Signed-off-by: Christian Marangi <[email protected]>
Cc: [email protected] # v5.17+
Reviewed-by: Arnd Bergmann <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Vinod Koul <[email protected]>

Author: Ansuel

drivers/dma/qcom/qcom_adm.c

@@ -494,7 +494,7 @@ static int adm_slave_config(struct dma_chan *chan, struct dma_slave_config *cfg)
 
 	spin_lock_irqsave(&achan->vc.lock, flag);
 	memcpy(&achan->slave, cfg, sizeof(struct dma_slave_config));
-	if (cfg->peripheral_size == sizeof(config))
+	if (cfg->peripheral_size == sizeof(*config))
 		achan->crci = config->crci;
 	spin_unlock_irqrestore(&achan->vc.lock, flag);