From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-pl0-f66.google.com ([209.85.160.66]:33664 "EHLO mail-pl0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752338AbeC0PRX (ORCPT ); Tue, 27 Mar 2018 11:17:23 -0400 Received: by mail-pl0-f66.google.com with SMTP id c11-v6so14277345plo.0 for ; Tue, 27 Mar 2018 08:17:23 -0700 (PDT) From: tskd08@gmail.com To: linux-media@vger.kernel.org Cc: mchehab@s-opensource.com, hiranotaka@zng.info, Akihiro Tsukada Subject: [PATCH 5/5] dvb: earth-pt1: replace schedule_timeout with usleep_range Date: Wed, 28 Mar 2018 00:16:02 +0900 Message-Id: <20180327151602.12250-6-tskd08@gmail.com> In-Reply-To: <20180327151602.12250-1-tskd08@gmail.com> References: <20180327151602.12250-1-tskd08@gmail.com> Sender: linux-media-owner@vger.kernel.org List-ID: From: Akihiro Tsukada As described in Document/timers/timers-howto.txt, hrtimer-based delay should be used for small sleeps. Signed-off-by: Akihiro Tsukada --- drivers/media/pci/pt1/pt1.c | 34 +++++++++++++++++++++++----------- 1 file changed, 23 insertions(+), 11 deletions(-) diff --git a/drivers/media/pci/pt1/pt1.c b/drivers/media/pci/pt1/pt1.c index 1a83a624776..4f84672974d 100644 --- a/drivers/media/pci/pt1/pt1.c +++ b/drivers/media/pci/pt1/pt1.c @@ -18,7 +18,10 @@ */ #include +#include #include +#include +#include #include #include #include @@ -327,7 +330,7 @@ static int pt1_unlock(struct pt1 *pt1) for (i = 0; i < 3; i++) { if (pt1_read_reg(pt1, 0) & 0x80000000) return 0; - schedule_timeout_uninterruptible((HZ + 999) / 1000); + usleep_range(1000, 2000); } dev_err(&pt1->pdev->dev, "could not unlock\n"); return -EIO; @@ -341,7 +344,7 @@ static int pt1_reset_pci(struct pt1 *pt1) for (i = 0; i < 10; i++) { if (pt1_read_reg(pt1, 0) & 0x00000001) return 0; - schedule_timeout_uninterruptible((HZ + 999) / 1000); + usleep_range(1000, 2000); } dev_err(&pt1->pdev->dev, "could not reset PCI\n"); return -EIO; @@ -355,7 +358,7 @@ static int pt1_reset_ram(struct pt1 *pt1) for (i = 0; i < 10; i++) { if (pt1_read_reg(pt1, 0) & 0x00000002) return 0; - schedule_timeout_uninterruptible((HZ + 999) / 1000); + usleep_range(1000, 2000); } dev_err(&pt1->pdev->dev, "could not reset RAM\n"); return -EIO; @@ -372,7 +375,7 @@ static int pt1_do_enable_ram(struct pt1 *pt1) if ((pt1_read_reg(pt1, 0) & 0x00000004) != status) return 0; } - schedule_timeout_uninterruptible((HZ + 999) / 1000); + usleep_range(1000, 2000); } dev_err(&pt1->pdev->dev, "could not enable RAM\n"); return -EIO; @@ -382,7 +385,7 @@ static int pt1_enable_ram(struct pt1 *pt1) { int i, ret; int phase; - schedule_timeout_uninterruptible((HZ + 999) / 1000); + usleep_range(1000, 2000); phase = pt1->pdev->device == 0x211a ? 128 : 166; for (i = 0; i < phase; i++) { ret = pt1_do_enable_ram(pt1); @@ -469,6 +472,9 @@ static int pt1_thread(void *data) struct pt1_buffer_page *page; bool was_frozen; +#define PT1_FETCH_DELAY 10 +#define PT1_FETCH_DELAY_DELTA 2 + pt1 = data; set_freezable(); @@ -482,7 +488,13 @@ static int pt1_thread(void *data) page = pt1->tables[pt1->table_index].bufs[pt1->buf_index].page; if (!pt1_filter(pt1, page)) { - schedule_timeout_interruptible((HZ + 999) / 1000); + ktime_t delay; + + delay = PT1_FETCH_DELAY * NSEC_PER_MSEC; + set_current_state(TASK_INTERRUPTIBLE); + schedule_hrtimeout_range(&delay, + PT1_FETCH_DELAY_DELTA * NSEC_PER_MSEC, + HRTIMER_MODE_REL); continue; } @@ -718,7 +730,7 @@ pt1_update_power(struct pt1 *pt1) adap = pt1->adaps[i]; switch (adap->voltage) { case SEC_VOLTAGE_13: /* actually 11V */ - bits |= 1 << 1; + bits |= 1 << 2; break; case SEC_VOLTAGE_18: /* actually 15V */ bits |= 1 << 1 | 1 << 2; @@ -772,7 +784,7 @@ static int pt1_wakeup(struct dvb_frontend *fe) adap = container_of(fe->dvb, struct pt1_adapter, adap); adap->sleep = 0; pt1_update_power(adap->pt1); - schedule_timeout_uninterruptible((HZ + 999) / 1000); + usleep_range(1000, 2000); ret = config_demod(adap->demod_i2c_client, adap->pt1->fe_clk); if (ret == 0 && adap->orig_init) @@ -1079,7 +1091,7 @@ static int pt1_i2c_end(struct pt1 *pt1, int addr) do { if (signal_pending(current)) return -EINTR; - schedule_timeout_interruptible((HZ + 999) / 1000); + usleep_range(1000, 2000); } while (pt1_read_reg(pt1, 0) & 0x00000080); return 0; } @@ -1382,11 +1394,11 @@ static int pt1_probe(struct pci_dev *pdev, const struct pci_device_id *ent) pt1->power = 1; pt1_update_power(pt1); - schedule_timeout_uninterruptible((HZ + 49) / 50); + msleep(20); pt1->reset = 0; pt1_update_power(pt1); - schedule_timeout_uninterruptible((HZ + 999) / 1000); + usleep_range(1000, 2000); ret = pt1_init_frontends(pt1); if (ret < 0) -- 2.16.3