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adc: atomic allocate memory in spin_lock_irqsave

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This commit is contained in:
kfx 2012-04-23 12:51:24 +08:00
parent 0af5107b95
commit 37668df828
1 changed files with 8 additions and 3 deletions
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11
drivers/adc/core.c
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@ -98,7 +98,7 @@ static int adc_request_add(struct adc_host *adc, struct adc_client *client)
if(req->client->index == client->index)
return 0;
}
req = kzalloc(sizeof(struct adc_request), GFP_KERNEL);
req = kzalloc(sizeof(struct adc_request), GFP_ATOMIC);
if(!req)
return -ENOMEM;
@ -129,7 +129,7 @@ void adc_core_irq_handle(struct adc_host *adc)
int adc_host_read(struct adc_client *client, enum read_type type)
{
int tmo;
int tmo, ret = 0;
unsigned long flags;
struct adc_host *adc = NULL;
@ -144,7 +144,12 @@ int adc_host_read(struct adc_client *client, enum read_type type)
}
spin_lock_irqsave(&adc->lock, flags);
adc_request_add(adc, client);
ret = adc_request_add(adc, client);
if(ret < 0){
spin_unlock_irqrestore(&adc->lock, flags);
dev_err(adc->dev, "No memory for req\n");
return ret;
}
client->is_finished = 0;
spin_unlock_irqrestore(&adc->lock, flags);