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usb: gadget: s3c-hsotg: fix s3c_hsotg_write_fifo function for dedicated fifo mode

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In s3c_hsotg_write_fifo function PTxFEmp/NPTxFEmp interrupts are enabled
only in shared-fifo mode. In dedicated-fifo mode they should not be used
(when enabled then cause interrupt storm).

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Robert Baldyga 2013-09-19 11:50:18 +02:00 committed by Felipe Balbi
parent ab93e014f3
commit 5cb2ff0cdd
1 changed files with 10 additions and 6 deletions
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16
drivers/usb/gadget/s3c-hsotg.c
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@ -563,9 +563,11 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
if (to_write > max_transfer) {
to_write = max_transfer;
s3c_hsotg_en_gsint(hsotg,
periodic ? GINTSTS_PTxFEmp :
GINTSTS_NPTxFEmp);
/* it's needed only when we do not use dedicated fifos */
if (!hsotg->dedicated_fifos)
s3c_hsotg_en_gsint(hsotg,
periodic ? GINTSTS_PTxFEmp :
GINTSTS_NPTxFEmp);
}
/* see if we can write data */
@ -590,9 +592,11 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
* is more room left.
*/
s3c_hsotg_en_gsint(hsotg,
periodic ? GINTSTS_PTxFEmp :
GINTSTS_NPTxFEmp);
/* it's needed only when we do not use dedicated fifos */
if (!hsotg->dedicated_fifos)
s3c_hsotg_en_gsint(hsotg,
periodic ? GINTSTS_PTxFEmp :
GINTSTS_NPTxFEmp);
}
dev_dbg(hsotg->dev, "write %d/%d, can_write %d, done %d\n",