#include #include #include #include #include /* Calculate expected number of TX descriptors */ int tso_count_descs(struct sk_buff *skb) { /* The Marvell Way */ return skb_shinfo(skb)->gso_segs * 2 + skb_shinfo(skb)->nr_frags; } EXPORT_SYMBOL(tso_count_descs); void tso_build_hdr(struct sk_buff *skb, char *hdr, struct tso_t *tso, int size, bool is_last) { struct tcphdr *tcph; int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); int mac_hdr_len = skb_network_offset(skb); memcpy(hdr, skb->data, hdr_len); if (!tso->ipv6) { struct iphdr *iph = (void *)(hdr + mac_hdr_len); iph->id = htons(tso->ip_id); iph->tot_len = htons(size + hdr_len - mac_hdr_len); tso->ip_id++; } else { struct ipv6hdr *iph = (void *)(hdr + mac_hdr_len); iph->payload_len = htons(size + tcp_hdrlen(skb)); } tcph = (struct tcphdr *)(hdr + skb_transport_offset(skb)); put_unaligned_be32(tso->tcp_seq, &tcph->seq); if (!is_last) { /* Clear all special flags for not last packet */ tcph->psh = 0; tcph->fin = 0; tcph->rst = 0; } } EXPORT_SYMBOL(tso_build_hdr); void tso_build_data(struct sk_buff *skb, struct tso_t *tso, int size) { tso->tcp_seq += size; tso->size -= size; tso->data += size; if ((tso->size == 0) && (tso->next_frag_idx < skb_shinfo(skb)->nr_frags)) { skb_frag_t *frag = &skb_shinfo(skb)->frags[tso->next_frag_idx]; /* Move to next segment */ tso->size = frag->size; tso->data = page_address(frag->page.p) + frag->page_offset; tso->next_frag_idx++; } } EXPORT_SYMBOL(tso_build_data); void tso_start(struct sk_buff *skb, struct tso_t *tso) { int hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); tso->ip_id = ntohs(ip_hdr(skb)->id); tso->tcp_seq = ntohl(tcp_hdr(skb)->seq); tso->next_frag_idx = 0; tso->ipv6 = vlan_get_protocol(skb) == htons(ETH_P_IPV6); /* Build first data */ tso->size = skb_headlen(skb) - hdr_len; tso->data = skb->data + hdr_len; if ((tso->size == 0) && (tso->next_frag_idx < skb_shinfo(skb)->nr_frags)) { skb_frag_t *frag = &skb_shinfo(skb)->frags[tso->next_frag_idx]; /* Move to next segment */ tso->size = frag->size; tso->data = page_address(frag->page.p) + frag->page_offset; tso->next_frag_idx++; } } EXPORT_SYMBOL(tso_start); amp;id=cdca06e4e85974d8a3503ab15709dbbaf90d3dd1'>diff
path: root/sound/pci/emu10k1/emu10k1.c
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authorAlexander Stein <alexander.stein@systec-electronic.com>2017-01-30 12:35:28 +0100
committerLinus Walleij <linus.walleij@linaro.org>2017-01-30 15:53:57 +0100
commitcdca06e4e85974d8a3503ab15709dbbaf90d3dd1 (patch)
tree268b0c01070a957006db97c88dccb5fb061440ff /sound/pci/emu10k1/emu10k1.c
parent1b89970d81bbd52720fc64a3fe9572ee33588363 (diff)
pinctrl: baytrail: Add missing spinlock usage in byt_gpio_irq_handler
According to VLI64 Intel Atom E3800 Specification Update (#329901) concurrent read accesses may result in returning 0xffffffff and write accesses may be dropped silently. To workaround all accesses must be protected by locks. Cc: stable@vger.kernel.org Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'sound/pci/emu10k1/emu10k1.c')